124428017491 has 16 divisors (see below), whose sum is σ = 127191859200. Its totient is φ = 121687671168.

The previous prime is 124428017489. The next prime is 124428017507. The reversal of 124428017491 is 194710824421.

It is a cyclic number.

It is not a de Polignac number, because 124428017491 - 2¹ = 124428017489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124428017401) 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, 9164590 + ... + 9178156.

It is an arithmetic number, because the mean of its divisors is an integer number (7949491200).

Almost surely, 2^124428017491 is an apocalyptic number.

124428017491 is a deficient number, since it is larger than the sum of its proper divisors (2763841709).

124428017491 is a wasteful number, since it uses less digits than its factorization.

124428017491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14418.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 124428017491 in words is "one hundred twenty-four billion, four hundred twenty-eight million, seventeen thousand, four hundred ninety-one".