124621432436 has 12 divisors (see below), whose sum is σ = 218874828228. Its totient is φ = 62085767232.

The previous prime is 124621432409. The next prime is 124621432477. The reversal of 124621432436 is 634234126421.

It can be written as a sum of positive squares in 2 ways, for example, as 68248427536 + 56373004900 = 261244^2 + 237430^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 124621432436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56236001 + ... + 56238216.

It is an arithmetic number, because the mean of its divisors is an integer number (18239569019).

Almost surely, 2^124621432436 is an apocalyptic number.

It is an amenable number.

124621432436 is a deficient number, since it is larger than the sum of its proper divisors (94253395792).

124621432436 is a wasteful number, since it uses less digits than its factorization.

124621432436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112474498 (or 112474496 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

Adding to 124621432436 its reverse (634234126421), we get a palindrome (758855558857).

The spelling of 124621432436 in words is "one hundred twenty-four billion, six hundred twenty-one million, four hundred thirty-two thousand, four hundred thirty-six".