342115221 has 32 divisors (see below), whose sum is σ = 529205248. Its totient is φ = 192559680.

The previous prime is 342115219. The next prime is 342115231. The reversal of 342115221 is 122511243.

It is not a de Polignac number, because 342115221 - 2¹ = 342115219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342115201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 598866 + ... + 599436.

It is an arithmetic number, because the mean of its divisors is an integer number (16537664).

Almost surely, 2^342115221 is an apocalyptic number.

It is an amenable number.

342115221 is a deficient number, since it is larger than the sum of its proper divisors (187090027).

342115221 is a wasteful number, since it uses less digits than its factorization.

342115221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its digits is 480, while the sum is 21.

The square root of 342115221 is about 18496.3569656297. The cubic root of 342115221 is about 699.3975912492.

Adding to 342115221 its reverse (122511243), we get a palindrome (464626464).

The spelling of 342115221 in words is "three hundred forty-two million, one hundred fifteen thousand, two hundred twenty-one".