642504246 has 8 divisors (see below), whose sum is σ = 1285008504. Its totient is φ = 214168080.

The previous prime is 642504229. The next prime is 642504253. The reversal of 642504246 is 642405246.

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

642504246 is an admirable number.

It is a super-2 number, since 2×642504246² = 825623412256057032, which contains 22 as substring.

It is a congruent 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, 53542015 + ... + 53542026.

It is an arithmetic number, because the mean of its divisors is an integer number (160626063).

Almost surely, 2^642504246 is an apocalyptic number.

642504246 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.

642504246 is a wasteful number, since it uses less digits than its factorization.

642504246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107084046.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 642504246 is about 25347.6674666526. The cubic root of 642504246 is about 862.8964203327.

The spelling of 642504246 in words is "six hundred forty-two million, five hundred four thousand, two hundred forty-six".