642850472 has 64 divisors (see below), whose sum is σ = 1376870400. Its totient is φ = 278712000.

The previous prime is 642850463. The next prime is 642850487. The reversal of 642850472 is 274058246.

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 15 ways as a sum of consecutive naturals, for example, 192029 + ... + 195347.

It is an arithmetic number, because the mean of its divisors is an integer number (21513600).

Almost surely, 2^642850472 is an apocalyptic number.

642850472 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642850472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688435200).

642850472 is an abundant number, since it is smaller than the sum of its proper divisors (734019928).

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

642850472 is a wasteful number, since it uses less digits than its factorization.

642850472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438 (or 3434 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 642850472 is about 25354.4960904373. The cubic root of 642850472 is about 863.0513887137.

The spelling of 642850472 in words is "six hundred forty-two million, eight hundred fifty thousand, four hundred seventy-two".