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20124241001 = 191059170579
BaseRepresentation
bin10010101111011111…
…111000110001101001
31220221111022100212022
4102233133320301221
5312203301203001
613124524154225
71311461140364
oct225737706151
956844270768
1020124241001
118597678137
123a97698975
131b89358017
14d8c9c70db
157cbb0d11b
hex4af7f8c69

20124241001 has 4 divisors (see below), whose sum is σ = 21183411600. Its totient is φ = 19065070404.

The previous prime is 20124240971. The next prime is 20124241019. The reversal of 20124241001 is 10014242102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10014242102 = 25007121051.

It is a cyclic number.

It is not a de Polignac number, because 20124241001 - 26 = 20124240937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20124241061) 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, 529585271 + ... + 529585308.

It is an arithmetic number, because the mean of its divisors is an integer number (5295852900).

Almost surely, 220124241001 is an apocalyptic number.

It is an amenable number.

20124241001 is a deficient number, since it is larger than the sum of its proper divisors (1059170599).

20124241001 is a wasteful number, since it uses less digits than its factorization.

20124241001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059170598.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20124241001 its reverse (10014242102), we get a palindrome (30138483103).

The spelling of 20124241001 in words is "twenty billion, one hundred twenty-four million, two hundred forty-one thousand, one".

Divisors: 1 19 1059170579 20124241001