Search a number
-
+
42683131 = 307139033
BaseRepresentation
bin1010001011010…
…0101011111011
32222022112020201
42202310223323
541411330011
64122503031
71025541421
oct242645373
988275221
1042683131
1122103517
1212364a77
138ac5bba
145951111
153b31cc1
hex28b4afb

42683131 has 4 divisors (see below), whose sum is σ = 42822472. Its totient is φ = 42543792.

The previous prime is 42683093. The next prime is 42683143. The reversal of 42683131 is 13138624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42683131 - 211 = 42681083 is a prime.

It is a super-2 number, since 2×426831312 = 3643699343926322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42683131.

It is not an unprimeable number, because it can be changed into a prime (42683171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69210 + ... + 69823.

It is an arithmetic number, because the mean of its divisors is an integer number (10705618).

Almost surely, 242683131 is an apocalyptic number.

42683131 is a deficient number, since it is larger than the sum of its proper divisors (139341).

42683131 is a wasteful number, since it uses less digits than its factorization.

42683131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139340.

The product of its digits is 3456, while the sum is 28.

The square root of 42683131 is about 6533.2328138526. The cubic root of 42683131 is about 349.4771267393.

The spelling of 42683131 in words is "forty-two million, six hundred eighty-three thousand, one hundred thirty-one".

Divisors: 1 307 139033 42683131