40179642 has 32 divisors (see below), whose sum is σ = 86400000. Its totient is φ = 12416688.

The previous prime is 40179617. The next prime is 40179679. The reversal of 40179642 is 24697104.

It is a happy number.

It is a super-2 number, since 2×40179642² = 3228807262496328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609 + ... + 9107.

It is an arithmetic number, because the mean of its divisors is an integer number (2700000).

Almost surely, 2^40179642 is an apocalyptic number.

40179642 is an abundant number, since it is smaller than the sum of its proper divisors (46220358).

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

40179642 is a wasteful number, since it uses less digits than its factorization.

40179642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7570.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 40179642 is about 6338.7413577145. The cubic root of 40179642 is about 342.5063973089.

The spelling of 40179642 in words is "forty million, one hundred seventy-nine thousand, six hundred forty-two".