265543242 has 8 divisors (see below), whose sum is σ = 531086496. Its totient is φ = 88514412.

The previous prime is 265543231. The next prime is 265543249. The reversal of 265543242 is 242345562.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

265543242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (265543249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22128598 + ... + 22128609.

It is an arithmetic number, because the mean of its divisors is an integer number (66385812).

Almost surely, 2^265543242 is an apocalyptic number.

265543242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

265543242 is a wasteful number, since it uses less digits than its factorization.

265543242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44257212.

The product of its digits is 57600, while the sum is 33.

The square root of 265543242 is about 16295.4975990302. The cubic root of 265543242 is about 642.7544386332.

It can be divided in two parts, 26554 and 3242, that multiplied together give a palindrome (86088068).

The spelling of 265543242 in words is "two hundred sixty-five million, five hundred forty-three thousand, two hundred forty-two".