342120000621 has 24 divisors (see below), whose sum is σ = 530796605664. Its totient is φ = 195437642400.

The previous prime is 342120000613. The next prime is 342120000667. The reversal of 342120000621 is 126000021243.

It is not a de Polignac number, because 342120000621 - 2³ = 342120000613 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342120000221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132726 + ... + 837768.

It is an arithmetic number, because the mean of its divisors is an integer number (22116525236).

Almost surely, 2^342120000621 is an apocalyptic number.

It is an amenable number.

342120000621 is a deficient number, since it is larger than the sum of its proper divisors (188676605043).

342120000621 is a wasteful number, since it uses less digits than its factorization.

342120000621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708361 (or 708354 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 342120000621 its reverse (126000021243), we get a palindrome (468120021864).

The spelling of 342120000621 in words is "three hundred forty-two billion, one hundred twenty million, six hundred twenty-one", and thus it is an aban number.