124078623921 has 48 divisors (see below), whose sum is σ = 208263918720. Its totient is φ = 69718682880.

The previous prime is 124078623901. The next prime is 124078623997. The reversal of 124078623921 is 129326870421.

124078623921 is a `hidden beast` number, since 1 + 2 + 407 + 8 + 6 + 239 + 2 + 1 = 666.

It is not a de Polignac number, because 124078623921 - 2²² = 124074429617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124078623901) 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 47 ways as a sum of consecutive naturals, for example, 1481515 + ... + 1563023.

It is an arithmetic number, because the mean of its divisors is an integer number (4338831640).

Almost surely, 2^124078623921 is an apocalyptic number.

It is an amenable number.

124078623921 is a deficient number, since it is larger than the sum of its proper divisors (84185294799).

124078623921 is a wasteful number, since it uses less digits than its factorization.

124078623921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81926 (or 81923 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 124078623921 in words is "one hundred twenty-four billion, seventy-eight million, six hundred twenty-three thousand, nine hundred twenty-one".