642335461 has 8 divisors (see below), whose sum is σ = 654998400. Its totient is φ = 629692752.

The previous prime is 642335453. The next prime is 642335539. The reversal of 642335461 is 164533246.

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 642335461 - 2³ = 642335453 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 (642335401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 69816 + ... + 78478.

It is an arithmetic number, because the mean of its divisors is an integer number (81874800).

Almost surely, 2^642335461 is an apocalyptic number.

It is an amenable number.

642335461 is a deficient number, since it is larger than the sum of its proper divisors (12662939).

642335461 is a wasteful number, since it uses less digits than its factorization.

642335461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115.

The product of its digits is 51840, while the sum is 34.

The square root of 642335461 is about 25344.3378489161. The cubic root of 642335461 is about 862.8208531394.

The spelling of 642335461 in words is "six hundred forty-two million, three hundred thirty-five thousand, four hundred sixty-one".