642462499 has 8 divisors (see below), whose sum is σ = 735002208. Its totient is φ = 550112640.

The previous prime is 642462481. The next prime is 642462511. The reversal of 642462499 is 994264246.

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

It is not a de Polignac number, because 642462499 - 2⁵ = 642462467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642462439) 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, 40132 + ... + 53809.

It is an arithmetic number, because the mean of its divisors is an integer number (91875276).

Almost surely, 2^642462499 is an apocalyptic number.

642462499 is a deficient number, since it is larger than the sum of its proper divisors (92539709).

642462499 is an equidigital number, since it uses as much as digits as its factorization.

642462499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94925.

The product of its digits is 746496, while the sum is 46.

The square root of 642462499 is about 25346.8439652750. The cubic root of 642462499 is about 862.8777309013.

The spelling of 642462499 in words is "six hundred forty-two million, four hundred sixty-two thousand, four hundred ninety-nine".