124212661839 has 64 divisors (see below), whose sum is σ = 222872601600. Its totient is φ = 66745119744.

The previous prime is 124212661831. The next prime is 124212661841. The reversal of 124212661839 is 938166212421.

124212661839 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 1 + 26 + 618 + 3 + 9 = 666.

It is not a de Polignac number, because 124212661839 - 2³ = 124212661831 is a prime.

It is a super-2 number, since 2×124212661839² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 124212661794 and 124212661803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124212661831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3797547 + ... + 3830115.

It is an arithmetic number, because the mean of its divisors is an integer number (3482384400).

Almost surely, 2^124212661839 is an apocalyptic number.

124212661839 is a deficient number, since it is larger than the sum of its proper divisors (98659939761).

124212661839 is a wasteful number, since it uses less digits than its factorization.

124212661839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33789 (or 33783 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The spelling of 124212661839 in words is "one hundred twenty-four billion, two hundred twelve million, six hundred sixty-one thousand, eight hundred thirty-nine".