342352521 has 16 divisors (see below), whose sum is σ = 579644800. Its totient is φ = 195629904.

The previous prime is 342352489. The next prime is 342352537. The reversal of 342352521 is 125253243.

It is a happy number.

It is not a de Polignac number, because 342352521 - 2⁵ = 342352489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (342352321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905506 + ... + 905883.

It is an arithmetic number, because the mean of its divisors is an integer number (36227800).

Almost surely, 2^342352521 is an apocalyptic number.

It is an amenable number.

342352521 is a deficient number, since it is larger than the sum of its proper divisors (237292279).

342352521 is a wasteful number, since it uses less digits than its factorization.

342352521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811405 (or 1811399 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 342352521 is about 18502.7706303678. The cubic root of 342352521 is about 699.5592606518.

The spelling of 342352521 in words is "three hundred forty-two million, three hundred fifty-two thousand, five hundred twenty-one".