122618090 has 48 divisors (see below), whose sum is σ = 265631400. Its totient is φ = 40586112.

The previous prime is 122618087. The next prime is 122618137. The reversal of 122618090 is 90816221.

It can be written as a sum of positive squares in 4 ways, for example, as 111281401 + 11336689 = 10549^2 + 3367^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9896 + ... + 18524.

Almost surely, 2^122618090 is an apocalyptic number.

122618090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122618090 is an abundant number, since it is smaller than the sum of its proper divisors (143013310).

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

122618090 is a wasteful number, since it uses less digits than its factorization.

122618090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8679 (or 8672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 122618090 is about 11073.3052879436. The cubic root of 122618090 is about 496.8037312704.

The spelling of 122618090 in words is "one hundred twenty-two million, six hundred eighteen thousand, ninety".