667437042 has 8 divisors (see below), whose sum is σ = 1334874096. Its totient is φ = 222479012.

The previous prime is 667437041. The next prime is 667437047. The reversal of 667437042 is 240734766.

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

667437042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (667437041) 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, 55619748 + ... + 55619759.

It is an arithmetic number, because the mean of its divisors is an integer number (166859262).

Almost surely, 2^667437042 is an apocalyptic number.

667437042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

667437042 is a wasteful number, since it uses less digits than its factorization.

667437042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111239512.

The product of its (nonzero) digits is 169344, while the sum is 39.

The square root of 667437042 is about 25834.8029216404. The cubic root of 667437042 is about 873.9168276276.

The spelling of 667437042 in words is "six hundred sixty-seven million, four hundred thirty-seven thousand, forty-two".