621427122 has 24 divisors (see below), whose sum is σ = 1351441260. Its totient is φ = 206370720.

The previous prime is 621427073. The next prime is 621427127. The reversal of 621427122 is 221724126.

621427122 is a `hidden beast` number, since 621 + 4 + 27 + 12 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 621056241 + 370881 = 24921^2 + 609^2 .

It is not an unprimeable number, because it can be changed into a prime (621427127) 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 11 ways as a sum of consecutive naturals, for example, 59329 + ... + 69012.

Almost surely, 2^621427122 is an apocalyptic number.

621427122 is an abundant number, since it is smaller than the sum of its proper divisors (730014138).

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

621427122 is a wasteful number, since it uses less digits than its factorization.

621427122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128618 (or 128615 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 621427122 is about 24928.4400233950. The cubic root of 621427122 is about 853.3556494747.

The spelling of 621427122 in words is "six hundred twenty-one million, four hundred twenty-seven thousand, one hundred twenty-two".