342795521 has 4 divisors (see below), whose sum is σ = 344777172. Its totient is φ = 340813872.

The previous prime is 342795449. The next prime is 342795589. The reversal of 342795521 is 125597243.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164839921 + 177955600 = 12839^2 + 13340^2 .

It is a cyclic number.

It is not a de Polignac number, because 342795521 - 2²⁶ = 275686657 is a prime.

It is a super-2 number, since 2×342795521² = 235017538435322882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (342795421) 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, 990566 + ... + 990911.

It is an arithmetic number, because the mean of its divisors is an integer number (86194293).

Almost surely, 2^342795521 is an apocalyptic number.

It is an amenable number.

342795521 is a deficient number, since it is larger than the sum of its proper divisors (1981651).

342795521 is a wasteful number, since it uses less digits than its factorization.

342795521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981650.

The product of its digits is 75600, while the sum is 38.

The square root of 342795521 is about 18514.7379403544. The cubic root of 342795521 is about 699.8608709886.

The spelling of 342795521 in words is "three hundred forty-two million, seven hundred ninety-five thousand, five hundred twenty-one".