642829016 has 24 divisors (see below), whose sum is σ = 1234237620. Its totient is φ = 313710096.

The previous prime is 642828961. The next prime is 642829039. The reversal of 642829016 is 610928246.

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 5 ways as a sum of consecutive naturals, for example, 469565 + ... + 470931.

Almost surely, 2^642829016 is an apocalyptic number.

It is an amenable number.

642829016 is a deficient number, since it is larger than the sum of its proper divisors (591408604).

642829016 is an equidigital number, since it uses as much as digits as its factorization.

642829016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 642829016 is about 25354.0729666853. The cubic root of 642829016 is about 863.0417867729.

The spelling of 642829016 in words is "six hundred forty-two million, eight hundred twenty-nine thousand, sixteen".