342056223621 has 20 divisors (see below), whose sum is σ = 583969003552. Its totient is φ = 195460698888.

The previous prime is 342056223617. The next prime is 342056223673. The reversal of 342056223621 is 126322650243.

342056223621 is a `hidden beast` number, since 3 + 4 + 2 + 0 + 5 + 6 + 2 + 23 + 621 = 666.

It is not a de Polignac number, because 342056223621 - 2² = 342056223617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342056224621) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 301636315 + ... + 301637448.

Almost surely, 2^342056223621 is an apocalyptic number.

It is an amenable number.

342056223621 is a deficient number, since it is larger than the sum of its proper divisors (241912779931).

342056223621 is an equidigital number, since it uses as much as digits as its factorization.

342056223621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603273782 (or 603273773 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 342056223621 its reverse (126322650243), we get a palindrome (468378873864).

The spelling of 342056223621 in words is "three hundred forty-two billion, fifty-six million, two hundred twenty-three thousand, six hundred twenty-one".