126621072724 has 12 divisors (see below), whose sum is σ = 221602215744. Its totient is φ = 63306153944.

The previous prime is 126621072701. The next prime is 126621072733. The reversal of 126621072724 is 427270126621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030162 + ... + 1146505.

It is an arithmetic number, because the mean of its divisors is an integer number (18466851312).

Almost surely, 2^126621072724 is an apocalyptic number.

It is an amenable number.

126621072724 is a deficient number, since it is larger than the sum of its proper divisors (94981143020).

126621072724 is a wasteful number, since it uses less digits than its factorization.

126621072724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191214 (or 2191212 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 126621072724 in words is "one hundred twenty-six billion, six hundred twenty-one million, seventy-two thousand, seven hundred twenty-four".