679215042 has 48 divisors (see below), whose sum is σ = 1699862112. Its totient is φ = 193714560.

The previous prime is 679215041. The next prime is 679215067. The reversal of 679215042 is 240512976.

679215042 is a `hidden beast` number, since 67 + 92 + 1 + 504 + 2 = 666.

It is a super-2 number, since 2×679215042² = 922666146558123528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 679214988 and 679215006.

It is not an unprimeable number, because it can be changed into a prime (679215041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97528 + ... + 104259.

It is an arithmetic number, because the mean of its divisors is an integer number (35413794).

Almost surely, 2^679215042 is an apocalyptic number.

679215042 is an abundant number, since it is smaller than the sum of its proper divisors (1020647070).

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

679215042 is a wasteful number, since it uses less digits than its factorization.

679215042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201823 (or 201820 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 679215042 is about 26061.7543922124. The cubic root of 679215042 is about 879.0274387953.

The spelling of 679215042 in words is "six hundred seventy-nine million, two hundred fifteen thousand, forty-two".