122402440 has 32 divisors (see below), whose sum is σ = 280606680. Its totient is φ = 48036352.

The previous prime is 122402437. The next prime is 122402453. The reversal of 122402440 is 44204221.

It can be written as a sum of positive squares in 4 ways, for example, as 86378436 + 36024004 = 9294^2 + 6002^2 .

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, 26749 + ... + 30988.

Almost surely, 2^122402440 is an apocalyptic number.

122402440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122402440 is an abundant number, since it is smaller than the sum of its proper divisors (158204240).

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

122402440 is a wasteful number, since it uses less digits than its factorization.

122402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57801 (or 57797 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 122402440 is about 11063.5636211846. The cubic root of 122402440 is about 496.5123153435.

Adding to 122402440 its reverse (44204221), we get a palindrome (166606661).

The spelling of 122402440 in words is "one hundred twenty-two million, four hundred two thousand, four hundred forty".