124642536125 has 16 divisors (see below), whose sum is σ = 155565249840. Its totient is φ = 99706744000.

The previous prime is 124642536121. The next prime is 124642536173. The reversal of 124642536125 is 521635246421.

It can be written as a sum of positive squares in 8 ways, for example, as 9115284676 + 115527251449 = 95474^2 + 339893^2 .

It is not a de Polignac number, because 124642536125 - 2² = 124642536121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124642536121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2256335 + ... + 2310915.

It is an arithmetic number, because the mean of its divisors is an integer number (9722828115).

Almost surely, 2^124642536125 is an apocalyptic number.

It is an amenable number.

124642536125 is a deficient number, since it is larger than the sum of its proper divisors (30922713715).

124642536125 is an equidigital number, since it uses as much as digits as its factorization.

124642536125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72865 (or 72855 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The spelling of 124642536125 in words is "one hundred twenty-four billion, six hundred forty-two million, five hundred thirty-six thousand, one hundred twenty-five".