642174 has 16 divisors (see below), whose sum is σ = 1383312. Its totient is φ = 197568.

The previous prime is 642163. The next prime is 642197. The reversal of 642174 is 471246.

It is a d-powerful number, because it can be written as 6³ + 4 + 1 + 2¹⁹ + 7⁶ + 4² .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4039 + ... + 4194.

It is an arithmetic number, because the mean of its divisors is an integer number (86457).

2⁶⁴²¹⁷⁴ is an apocalyptic number.

642174 is an abundant number, since it is smaller than the sum of its proper divisors (741138).

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

642174 is a wasteful number, since it uses less digits than its factorization.

642174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251.

The product of its digits is 1344, while the sum is 24.

The square root of 642174 is about 801.3575980797. The cubic root of 642174 is about 86.2748552605.

The spelling of 642174 in words is "six hundred forty-two thousand, one hundred seventy-four".