642304927 has 8 divisors (see below), whose sum is σ = 701869392. Its totient is φ = 582936000.

The previous prime is 642304919. The next prime is 642304939. The reversal of 642304927 is 729403246.

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

It is a cyclic number.

It is not a de Polignac number, because 642304927 - 2³ = 642304919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642304967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41968 + ... + 55189.

It is an arithmetic number, because the mean of its divisors is an integer number (87733674).

Almost surely, 2^642304927 is an apocalyptic number.

642304927 is a deficient number, since it is larger than the sum of its proper divisors (59564465).

642304927 is a wasteful number, since it uses less digits than its factorization.

642304927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97769.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 642304927 is about 25343.7354586888. The cubic root of 642304927 is about 862.8071812650.

The spelling of 642304927 in words is "six hundred forty-two million, three hundred four thousand, nine hundred twenty-seven".