265442 has 4 divisors (see below), whose sum is σ = 398166. Its totient is φ = 132720.

The previous prime is 265427. The next prime is 265451. The reversal of 265442 is 244562.

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

It can be written as a sum of positive squares in only one way, i.e., 143641 + 121801 = 379^2 + 349^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66359 + ... + 66362.

2²⁶⁵⁴⁴² is an apocalyptic number.

265442 is a deficient number, since it is larger than the sum of its proper divisors (132724).

265442 is a wasteful number, since it uses less digits than its factorization.

265442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132723.

The product of its digits is 1920, while the sum is 23.

The square root of 265442 is about 515.2106365362. The cubic root of 265442 is about 64.2672741937.

It can be divided in two parts, 265 and 442, that added together give a palindrome (707).

The spelling of 265442 in words is "two hundred sixty-five thousand, four hundred forty-two".