642241506 has 8 divisors (see below), whose sum is σ = 1284483024. Its totient is φ = 214080500.

The previous prime is 642241469. The next prime is 642241519. The reversal of 642241506 is 605142246.

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

642241506 is an admirable number.

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, 53520120 + ... + 53520131.

It is an arithmetic number, because the mean of its divisors is an integer number (160560378).

Almost surely, 2^642241506 is an apocalyptic number.

642241506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642241506 is a wasteful number, since it uses less digits than its factorization.

642241506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107040256.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 642241506 is about 25342.4842113002. The cubic root of 642241506 is about 862.7787825543.

The spelling of 642241506 in words is "six hundred forty-two million, two hundred forty-one thousand, five hundred six".