265642 has 16 divisors (see below), whose sum is σ = 455112. Its totient is φ = 115200.

The previous prime is 265621. The next prime is 265703. The reversal of 265642 is 246562.

It can be written as a sum of positive squares in 4 ways, for example, as 249001 + 16641 = 499^2 + 129^2 .

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, 142 + ... + 742.

2²⁶⁵⁶⁴² is an apocalyptic number.

265642 is a deficient number, since it is larger than the sum of its proper divisors (189470).

265642 is a wasteful number, since it uses less digits than its factorization.

265642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its digits is 2880, while the sum is 25.

The square root of 265642 is about 515.4046953608. The cubic root of 265642 is about 64.2834110874.

The spelling of 265642 in words is "two hundred sixty-five thousand, six hundred forty-two".