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13124141430421 = 7229113586713931
BaseRepresentation
bin1011111011111011001111…
…0010011011011010010101
31201110122200222111121021211
42332332303302123122111
53210011220201233141
643525051454141421
72523121313346100
oct276766362333225
951418628447254
1013124141430421
1141aaa0a76788a
12157b6684b1871
137427a7b82618
143352d73b9737
1517b5c7eecd81
hexbefb3c9b695

13124141430421 has 48 divisors (see below), whose sum is σ = 15936925141440. Its totient is φ = 10762632706560.

The previous prime is 13124141430383. The next prime is 13124141430437. The reversal of 13124141430421 is 12403414142131.

It is not a de Polignac number, because 13124141430421 - 219 = 13124140906133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124141430451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 942074826 + ... + 942088756.

It is an arithmetic number, because the mean of its divisors is an integer number (332019273780).

Almost surely, 213124141430421 is an apocalyptic number.

It is an amenable number.

13124141430421 is a deficient number, since it is larger than the sum of its proper divisors (2812783711019).

13124141430421 is a wasteful number, since it uses less digits than its factorization.

13124141430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19954 (or 19947 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 13124141430421 its reverse (12403414142131), we get a palindrome (25527555572552).

The spelling of 13124141430421 in words is "thirteen trillion, one hundred twenty-four billion, one hundred forty-one million, four hundred thirty thousand, four hundred twenty-one".

Divisors: 1 7 29 49 113 203 791 1421 3277 5537 5867 13931 22939 41069 97517 160573 170143 287483 403999 662971 682619 1191001 1574203 2827993 4640797 8337007 11019421 19226159 19795951 32485579 45651887 77135947 81733177 134583113 319563209 572132239 942081791 2236942463 2370262133 4004925673 9235849001 16591834931 64650943007 116142844517 267839621029 452556601049 1874877347203 13124141430421