124942198638 has 16 divisors (see below), whose sum is σ = 260748936576. Its totient is φ = 39836643000.

The previous prime is 124942198613. The next prime is 124942198639. The reversal of 124942198638 is 836891249421.

It is a super-2 number, since 2×124942198638² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124942198639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452688988 + ... + 452689263.

It is an arithmetic number, because the mean of its divisors is an integer number (16296808536).

Almost surely, 2^124942198638 is an apocalyptic number.

124942198638 is an abundant number, since it is smaller than the sum of its proper divisors (135806737938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124942198638 is a wasteful number, since it uses less digits than its factorization.

124942198638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905378279.

The product of its digits is 5971968, while the sum is 57.

The spelling of 124942198638 in words is "one hundred twenty-four billion, nine hundred forty-two million, one hundred ninety-eight thousand, six hundred thirty-eight".