642136174 has 16 divisors (see below), whose sum is σ = 989971200. Its totient is φ = 312267384.

The previous prime is 642136169. The next prime is 642136177. The reversal of 642136174 is 471631246.

It is a super-3 number, since 3×642136174³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642136177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19744 + ... + 40915.

It is an arithmetic number, because the mean of its divisors is an integer number (61873200).

Almost surely, 2^642136174 is an apocalyptic number.

642136174 is a deficient number, since it is larger than the sum of its proper divisors (347835026).

642136174 is a wasteful number, since it uses less digits than its factorization.

642136174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60807.

The product of its digits is 24192, while the sum is 34.

The square root of 642136174 is about 25340.4059557064. The cubic root of 642136174 is about 862.7316127682.

The spelling of 642136174 in words is "six hundred forty-two million, one hundred thirty-six thousand, one hundred seventy-four".