642464122324 has 24 divisors (see below), whose sum is σ = 1142154494208. Its totient is φ = 316153114560.

The previous prime is 642464122309. The next prime is 642464122357. The reversal of 642464122324 is 423221464246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219332 + ... + 2492059.

It is an arithmetic number, because the mean of its divisors is an integer number (47589770592).

Almost surely, 2^642464122324 is an apocalyptic number.

It is an amenable number.

642464122324 is a deficient number, since it is larger than the sum of its proper divisors (499690371884).

642464122324 is a wasteful number, since it uses less digits than its factorization.

642464122324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711935 (or 4711933 counting only the distinct ones).

The product of its digits is 442368, while the sum is 40.

The spelling of 642464122324 in words is "six hundred forty-two billion, four hundred sixty-four million, one hundred twenty-two thousand, three hundred twenty-four".