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10120125261 = 324113997407
BaseRepresentation
bin10010110110011010…
…01101101101001101
3222010021210122000010
421123031031231031
5131211223002021
64352113223433
7505533434241
oct113315155515
928107718003
1010120125261
114323601994
121b65261b79
13c538593cc
146c00b2421
153e36da976
hex25b34db4d

10120125261 has 8 divisors (see below), whose sum is σ = 13549490944. Its totient is φ = 6718754880.

The previous prime is 10120125233. The next prime is 10120125271. The reversal of 10120125261 is 16252102101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10120125261 - 214 = 10120108877 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 (10120125271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6997981 + ... + 6999426.

It is an arithmetic number, because the mean of its divisors is an integer number (1693686368).

Almost surely, 210120125261 is an apocalyptic number.

It is an amenable number.

10120125261 is a deficient number, since it is larger than the sum of its proper divisors (3429365683).

10120125261 is a wasteful number, since it uses less digits than its factorization.

10120125261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13997651.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 10120125261 its reverse (16252102101), we get a palindrome (26372227362).

The spelling of 10120125261 in words is "ten billion, one hundred twenty million, one hundred twenty-five thousand, two hundred sixty-one".

Divisors: 1 3 241 723 13997407 41992221 3373375087 10120125261