167542642 has 4 divisors (see below), whose sum is σ = 251313966. Its totient is φ = 83771320.

The previous prime is 167542621. The next prime is 167542673. The reversal of 167542642 is 246245761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92910321 + 74632321 = 9639^2 + 8639^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 41885659 + ... + 41885662.

Almost surely, 2^167542642 is an apocalyptic number.

167542642 is a deficient number, since it is larger than the sum of its proper divisors (83771324).

167542642 is an equidigital number, since it uses as much as digits as its factorization.

167542642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83771323.

The product of its digits is 80640, while the sum is 37.

The square root of 167542642 is about 12943.8264048928. The cubic root of 167542642 is about 551.2836595535.

The spelling of 167542642 in words is "one hundred sixty-seven million, five hundred forty-two thousand, six hundred forty-two".