642282870 has 16 divisors (see below), whose sum is σ = 1541478960. Its totient is φ = 171275424.

The previous prime is 642282853. The next prime is 642282887. The reversal of 642282870 is 78282246.

642282870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642282853) and next prime (642282887).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10704685 + ... + 10704744.

It is an arithmetic number, because the mean of its divisors is an integer number (96342435).

Almost surely, 2^642282870 is an apocalyptic number.

642282870 is an abundant number, since it is smaller than the sum of its proper divisors (899196090).

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

642282870 is a wasteful number, since it uses less digits than its factorization.

642282870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21409439.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 642282870 is about 25343.3002981064. The cubic root of 642282870 is about 862.7973047743.

The spelling of 642282870 in words is "six hundred forty-two million, two hundred eighty-two thousand, eight hundred seventy".