642250334 has 48 divisors (see below), whose sum is σ = 1087482480. Its totient is φ = 284169600.

The previous prime is 642250333. The next prime is 642250339. The reversal of 642250334 is 433052246.

It is a super-2 number, since 2×642250334² = 824970983046223112, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 642250297 and 642250306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642250333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2051762 + ... + 2052074.

It is an arithmetic number, because the mean of its divisors is an integer number (22655885).

Almost surely, 2^642250334 is an apocalyptic number.

642250334 is a deficient number, since it is larger than the sum of its proper divisors (445232146).

642250334 is a wasteful number, since it uses less digits than its factorization.

642250334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 642250334 is about 25342.6583846289. The cubic root of 642250334 is about 862.7827356758.

The spelling of 642250334 in words is "six hundred forty-two million, two hundred fifty thousand, three hundred thirty-four".