122640264 has 32 divisors (see below), whose sum is σ = 340668000. Its totient is φ = 40880016.

The previous prime is 122640253. The next prime is 122640281. The reversal of 122640264 is 462046221.

122640264 is a `hidden beast` number, since 12 + 2 + 640 + 2 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283674 + ... + 284105.

It is an arithmetic number, because the mean of its divisors is an integer number (10645875).

Almost surely, 2^122640264 is an apocalyptic number.

It is an amenable number.

122640264 is an abundant number, since it is smaller than the sum of its proper divisors (218027736).

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

122640264 is a wasteful number, since it uses less digits than its factorization.

122640264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567794 (or 567784 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 122640264 is about 11074.3064794144. The cubic root of 122640264 is about 496.8336764494.

Adding to 122640264 its reverse (462046221), we get a palindrome (584686485).

The spelling of 122640264 in words is "one hundred twenty-two million, six hundred forty thousand, two hundred sixty-four".