642755350 has 12 divisors (see below), whose sum is σ = 1195525044. Its totient is φ = 257102120.

The previous prime is 642755341. The next prime is 642755369. The reversal of 642755350 is 53557246.

It is a super-3 number, since 3×642755350³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6427504 + ... + 6427603.

It is an arithmetic number, because the mean of its divisors is an integer number (99627087).

Almost surely, 2^642755350 is an apocalyptic number.

642755350 is a deficient number, since it is larger than the sum of its proper divisors (552769694).

642755350 is a wasteful number, since it uses less digits than its factorization.

642755350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12855119 (or 12855114 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 642755350 is about 25352.6201801707. The cubic root of 642755350 is about 863.0088183041.

The spelling of 642755350 in words is "six hundred forty-two million, seven hundred fifty-five thousand, three hundred fifty".