1342642621621 has 24 divisors (see below), whose sum is σ = 1566862466400. Its totient is φ = 1147145120352.

The previous prime is 1342642621601. The next prime is 1342642621633. The reversal of 1342642621621 is 1261262462431.

It is not a de Polignac number, because 1342642621621 - 2⁷ = 1342642621493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342642621601) 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, 56814810 + ... + 56838436.

It is an arithmetic number, because the mean of its divisors is an integer number (65285936100).

Almost surely, 2^{1342642621621} is an apocalyptic number.

It is an amenable number.

1342642621621 is a deficient number, since it is larger than the sum of its proper divisors (224219844779).

1342642621621 is a wasteful number, since it uses less digits than its factorization.

1342642621621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27313 (or 27306 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The spelling of 1342642621621 in words is "one trillion, three hundred forty-two billion, six hundred forty-two million, six hundred twenty-one thousand, six hundred twenty-one".