342122521 has 16 divisors (see below), whose sum is σ = 372677760. Its totient is φ = 312197760.

The previous prime is 342122509. The next prime is 342122537. The reversal of 342122521 is 125221243.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 342122521 - 2²⁵ = 308568089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342122492 and 342122501.

It is not an unprimeable number, because it can be changed into a prime (342122581) 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, 541876 + ... + 542506.

It is an arithmetic number, because the mean of its divisors is an integer number (23292360).

Almost surely, 2^342122521 is an apocalyptic number.

It is an amenable number.

342122521 is a deficient number, since it is larger than the sum of its proper divisors (30555239).

342122521 is a wasteful number, since it uses less digits than its factorization.

342122521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056.

The product of its digits is 960, while the sum is 22.

The square root of 342122521 is about 18496.5543007340. The cubic root of 342122521 is about 699.4025657586.

Adding to 342122521 its reverse (125221243), we get a palindrome (467343764).

The spelling of 342122521 in words is "three hundred forty-two million, one hundred twenty-two thousand, five hundred twenty-one".