124257161005 has 8 divisors (see below), whose sum is σ = 157879687032. Its totient is φ = 93558332928.

The previous prime is 124257160967. The next prime is 124257161011. The reversal of 124257161005 is 500161752421.

It can be written as a sum of positive squares in 4 ways, for example, as 5279766244 + 118977394761 = 72662^2 + 344931^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 124257161005 - 2⁹ = 124257160493 is a prime.

It is a super-2 number, since 2×124257161005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730924392 + ... + 730924561.

It is an arithmetic number, because the mean of its divisors is an integer number (19734960879).

Almost surely, 2^124257161005 is an apocalyptic number.

It is an amenable number.

124257161005 is a deficient number, since it is larger than the sum of its proper divisors (33622526027).

124257161005 is a wasteful number, since it uses less digits than its factorization.

124257161005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461848975.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 124257161005 in words is "one hundred twenty-four billion, two hundred fifty-seven million, one hundred sixty-one thousand, five".