42321953295621 has 24 divisors (see below), whose sum is σ = 63240023641080. Its totient is φ = 27241577790336.

The previous prime is 42321953295619. The next prime is 42321953295697. The reversal of 42321953295621 is 12659235912324.

42321953295621 is a `hidden beast` number, since 4 + 2 + 3 + 2 + 1 + 9 + 5 + 3 + 2 + 9 + 5 + 621 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12007514014596 + 30314439281025 = 3465186^2 + 5505855^2 .

It is not a de Polignac number, because 42321953295621 - 2¹ = 42321953295619 is a prime.

It is a super-2 number, since 2×42321953295621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42321953295221) 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, 82275195 + ... + 82787991.

It is an arithmetic number, because the mean of its divisors is an integer number (2635000985045).

Almost surely, 2^{42321953295621} is an apocalyptic number.

It is an amenable number.

42321953295621 is a deficient number, since it is larger than the sum of its proper divisors (20918070345459).

42321953295621 is a wasteful number, since it uses less digits than its factorization.

42321953295621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829045 (or 829042 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 42321953295621 in words is "forty-two trillion, three hundred twenty-one billion, nine hundred fifty-three million, two hundred ninety-five thousand, six hundred twenty-one".