123129245075 has 12 divisors (see below), whose sum is σ = 153447507600. Its totient is φ = 98008400160.

The previous prime is 123129245053. The next prime is 123129245089. The reversal of 123129245075 is 570542921321.

It is a happy number.

It is not a de Polignac number, because 123129245075 - 2³⁴ = 105949375891 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12369824 + ... + 12379773.

It is an arithmetic number, because the mean of its divisors is an integer number (12787292300).

Almost surely, 2^123129245075 is an apocalyptic number.

123129245075 is a deficient number, since it is larger than the sum of its proper divisors (30318262525).

123129245075 is a wasteful number, since it uses less digits than its factorization.

123129245075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24749806 (or 24749801 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 123129245075 in words is "one hundred twenty-three billion, one hundred twenty-nine million, two hundred forty-five thousand, seventy-five".