642808462 has 16 divisors (see below), whose sum is σ = 1029536640. Its totient is φ = 300279672.

The previous prime is 642808451. The next prime is 642808489. The reversal of 642808462 is 264808246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160512 + ... + 164467.

It is an arithmetic number, because the mean of its divisors is an integer number (64346040).

Almost surely, 2^642808462 is an apocalyptic number.

642808462 is a deficient number, since it is larger than the sum of its proper divisors (386728178).

642808462 is a wasteful number, since it uses less digits than its factorization.

642808462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325047.

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 642808462 is about 25353.6676242314. The cubic root of 642808462 is about 863.0325882927.

The spelling of 642808462 in words is "six hundred forty-two million, eight hundred eight thousand, four hundred sixty-two".