642452982 has 8 divisors (see below), whose sum is σ = 1284905976. Its totient is φ = 214150992.

The previous prime is 642452971. The next prime is 642452989. The reversal of 642452982 is 289254246.

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

642452982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642452989) 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, 53537743 + ... + 53537754.

It is an arithmetic number, because the mean of its divisors is an integer number (160613247).

Almost surely, 2^642452982 is an apocalyptic number.

642452982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642452982 is a wasteful number, since it uses less digits than its factorization.

642452982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107075502.

The product of its digits is 276480, while the sum is 42.

The square root of 642452982 is about 25346.6562291755. The cubic root of 642452982 is about 862.8734701868.

The spelling of 642452982 in words is "six hundred forty-two million, four hundred fifty-two thousand, nine hundred eighty-two".