642466482 has 64 divisors (see below), whose sum is σ = 1558206720. Its totient is φ = 172394496.

The previous prime is 642466469. The next prime is 642466501. The reversal of 642466482 is 284664246.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 568494 + ... + 569622.

It is an arithmetic number, because the mean of its divisors is an integer number (24346980).

Almost surely, 2^642466482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642466482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779103360).

642466482 is an abundant number, since it is smaller than the sum of its proper divisors (915740238).

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

642466482 is a wasteful number, since it uses less digits than its factorization.

642466482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its digits is 442368, while the sum is 42.

The square root of 642466482 is about 25346.9225350929. The cubic root of 642466482 is about 862.8795140585.

The spelling of 642466482 in words is "six hundred forty-two million, four hundred sixty-six thousand, four hundred eighty-two".