122479578 has 24 divisors (see below), whose sum is σ = 285786228. Its totient is φ = 37685952.

The previous prime is 122479571. The next prime is 122479579. The reversal of 122479578 is 875974221.

It is a happy number.

122479578 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 79 + 578 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122478489 + 1089 = 11067^2 + 33^2 .

It is not an unprimeable number, because it can be changed into a prime (122479571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261475 + ... + 261942.

Almost surely, 2^122479578 is an apocalyptic number.

122479578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122479578 is an abundant number, since it is smaller than the sum of its proper divisors (163306650).

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

122479578 is a wasteful number, since it uses less digits than its factorization.

122479578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523438 (or 523435 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 122479578 is about 11067.0492002159. The cubic root of 122479578 is about 496.6165941042.

The spelling of 122479578 in words is "one hundred twenty-two million, four hundred seventy-nine thousand, five hundred seventy-eight".