621113124 has 12 divisors (see below), whose sum is σ = 1449263984. Its totient is φ = 207037704.

The previous prime is 621113123. The next prime is 621113147. The reversal of 621113124 is 421311126.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 621113124.

It is not an unprimeable number, because it can be changed into a prime (621113123) by changing a digit.

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, 25879702 + ... + 25879725.

Almost surely, 2^621113124 is an apocalyptic number.

It is an amenable number.

621113124 is an abundant number, since it is smaller than the sum of its proper divisors (828150860).

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

621113124 is a wasteful number, since it uses less digits than its factorization.

621113124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51759434 (or 51759432 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 621113124 is about 24922.1412402707. The cubic root of 621113124 is about 853.2118959000.

The spelling of 621113124 in words is "six hundred twenty-one million, one hundred thirteen thousand, one hundred twenty-four".