642883642 has 8 divisors (see below), whose sum is σ = 995432832. Its totient is φ = 311072700.

The previous prime is 642883627. The next prime is 642883663. The reversal of 642883642 is 246388246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5184484 + ... + 5184607.

It is an arithmetic number, because the mean of its divisors is an integer number (124429104).

Almost surely, 2^642883642 is an apocalyptic number.

642883642 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

642883642 is a deficient number, since it is larger than the sum of its proper divisors (352549190).

642883642 is a wasteful number, since it uses less digits than its factorization.

642883642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10369124.

The product of its digits is 442368, while the sum is 43.

The square root of 642883642 is about 25355.1502066148. The cubic root of 642883642 is about 863.0662324571.

The spelling of 642883642 in words is "six hundred forty-two million, eight hundred eighty-three thousand, six hundred forty-two".