122830978 has 8 divisors (see below), whose sum is σ = 184299660. Its totient is φ = 61397760.

The previous prime is 122830973. The next prime is 122830997. The reversal of 122830978 is 879038221.

It can be written as a sum of positive squares in 2 ways, for example, as 120406729 + 2424249 = 10973^2 + 1557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 122830978.

It is not an unprimeable number, because it can be changed into a prime (122830973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2938 + ... + 15946.

Almost surely, 2^122830978 is an apocalyptic number.

122830978 is a deficient number, since it is larger than the sum of its proper divisors (61468682).

122830978 is a wasteful number, since it uses less digits than its factorization.

122830978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17732.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 122830978 is about 11082.9137865455. The cubic root of 122830978 is about 497.0910798535.

The spelling of 122830978 in words is "one hundred twenty-two million, eight hundred thirty thousand, nine hundred seventy-eight".