342662521 has 4 divisors (see below), whose sum is σ = 354478500. Its totient is φ = 330846544.

The previous prime is 342662519. The next prime is 342662531. The reversal of 342662521 is 125266243.

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 267649600 + 75012921 = 16360^2 + 8661^2 .

It is a cyclic number.

It is not a de Polignac number, because 342662521 - 2¹ = 342662519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342662531) 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, 5907946 + ... + 5908003.

It is an arithmetic number, because the mean of its divisors is an integer number (88619625).

Almost surely, 2^342662521 is an apocalyptic number.

It is an amenable number.

342662521 is a deficient number, since it is larger than the sum of its proper divisors (11815979).

342662521 is a wasteful number, since it uses less digits than its factorization.

342662521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11815978.

The product of its digits is 17280, while the sum is 31.

The square root of 342662521 is about 18511.1458586442. The cubic root of 342662521 is about 699.7703471137.

The spelling of 342662521 in words is "three hundred forty-two million, six hundred sixty-two thousand, five hundred twenty-one".