642463321 has 8 divisors (see below), whose sum is σ = 683877600. Its totient is φ = 601809120.

The previous prime is 642463279. The next prime is 642463333. The reversal of 642463321 is 123364246.

642463321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 642463321 - 2⁷ = 642463193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642463391) 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, 188275 + ... + 191656.

It is an arithmetic number, because the mean of its divisors is an integer number (85484700).

Almost surely, 2^642463321 is an apocalyptic number.

It is an amenable number.

642463321 is a deficient number, since it is larger than the sum of its proper divisors (41414279).

642463321 is a wasteful number, since it uses less digits than its factorization.

642463321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380039.

The product of its digits is 20736, while the sum is 31.

The square root of 642463321 is about 25346.8601803064. The cubic root of 642463321 is about 862.8780989048.

The spelling of 642463321 in words is "six hundred forty-two million, four hundred sixty-three thousand, three hundred twenty-one".