642286952 has 16 divisors (see below), whose sum is σ = 1207866660. Its totient is φ = 320189184.

The previous prime is 642286949. The next prime is 642286961. The reversal of 642286952 is 259682246.

It can be written as a sum of positive squares in 2 ways, for example, as 638775076 + 3511876 = 25274^2 + 1874^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116423 + ... + 121814.

Almost surely, 2^642286952 is an apocalyptic number.

It is an amenable number.

642286952 is a deficient number, since it is larger than the sum of its proper divisors (565579708).

642286952 is a wasteful number, since it uses less digits than its factorization.

642286952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238580 (or 238576 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 642286952 is about 25343.3808320832. The cubic root of 642286952 is about 862.7991325936.

The spelling of 642286952 in words is "six hundred forty-two million, two hundred eighty-six thousand, nine hundred fifty-two".