42638174 has 4 divisors (see below), whose sum is σ = 63957264. Its totient is φ = 21319086.

The previous prime is 42638161. The next prime is 42638191. The reversal of 42638174 is 47183624.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10659542 + ... + 10659545.

It is an arithmetic number, because the mean of its divisors is an integer number (15989316).

Almost surely, 2^42638174 is an apocalyptic number.

42638174 is a deficient number, since it is larger than the sum of its proper divisors (21319090).

42638174 is a wasteful number, since it uses less digits than its factorization.

42638174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21319089.

The product of its digits is 32256, while the sum is 35.

The square root of 42638174 is about 6529.7912677206. The cubic root of 42638174 is about 349.3543853330.

The spelling of 42638174 in words is "forty-two million, six hundred thirty-eight thousand, one hundred seventy-four".