642280974 has 24 divisors (see below), whose sum is σ = 1297656360. Its totient is φ = 211915440.

The previous prime is 642280943. The next prime is 642281023. The reversal of 642280974 is 479082246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 647619 + ... + 648609.

It is an arithmetic number, because the mean of its divisors is an integer number (54069015).

Almost surely, 2^642280974 is an apocalyptic number.

642280974 is an abundant number, since it is smaller than the sum of its proper divisors (655375386).

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

642280974 is an equidigital number, since it uses as much as digits as its factorization.

642280974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 642280974 is about 25343.2628917430. The cubic root of 642280974 is about 862.7964557894.

The spelling of 642280974 in words is "six hundred forty-two million, two hundred eighty thousand, nine hundred seventy-four".