642957282 has 48 divisors (see below), whose sum is σ = 1540569888. Its totient is φ = 192162240.

The previous prime is 642957281. The next prime is 642957307. The reversal of 642957282 is 282759246.

It is not an unprimeable number, because it can be changed into a prime (642957281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7788 + ... + 36695.

It is an arithmetic number, because the mean of its divisors is an integer number (32095206).

Almost surely, 2^642957282 is an apocalyptic number.

642957282 is an abundant number, since it is smaller than the sum of its proper divisors (897612606).

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

642957282 is a wasteful number, since it uses less digits than its factorization.

642957282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44575 (or 44572 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 642957282 is about 25356.6023354865. The cubic root of 642957282 is about 863.0991849058.

The spelling of 642957282 in words is "six hundred forty-two million, nine hundred fifty-seven thousand, two hundred eighty-two".