642462981022 has 8 divisors (see below), whose sum is σ = 963700648416. Its totient is φ = 321229431552.

The previous prime is 642462981019. The next prime is 642462981023. The reversal of 642462981022 is 220189264246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642462981023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604323 + ... + 1284574.

It is an arithmetic number, because the mean of its divisors is an integer number (120462581052).

Almost surely, 2^642462981022 is an apocalyptic number.

642462981022 is a deficient number, since it is larger than the sum of its proper divisors (321237667394).

642462981022 is a wasteful number, since it uses less digits than its factorization.

642462981022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058962.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 642462981022 in words is "six hundred forty-two billion, four hundred sixty-two million, nine hundred eighty-one thousand, twenty-two".