122396421904 has 45 divisors (see below), whose sum is σ = 239152727317. Its totient is φ = 60683928512.

The previous prime is 122396421893. The next prime is 122396421913. The reversal of 122396421904 is 409124693221.

The square root of 122396421904 is 349852.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14339583504 + 108056838400 = 119748^2 + 328720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 208511499 + ... + 208512085.

Almost surely, 2^122396421904 is an apocalyptic number.

122396421904 is the 349852-nd square number.

It is an amenable number.

122396421904 is a deficient number, since it is larger than the sum of its proper divisors (116756305413).

122396421904 is an frugal number, since it uses more digits than its factorization.

122396421904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 122396421904 in words is "one hundred twenty-two billion, three hundred ninety-six million, four hundred twenty-one thousand, nine hundred four".