642210224 has 40 divisors (see below), whose sum is σ = 1349632368. Its totient is φ = 294840320.

The previous prime is 642210223. The next prime is 642210269. The reversal of 642210224 is 422012246.

It is a self number, because there is not a number n which added to its sum of digits gives 642210224.

It is not an unprimeable number, because it can be changed into a prime (642210223) 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, 17642 + ... + 39945.

Almost surely, 2^642210224 is an apocalyptic number.

It is an amenable number.

642210224 is an abundant number, since it is smaller than the sum of its proper divisors (707422144).

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

642210224 is a wasteful number, since it uses less digits than its factorization.

642210224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57653 (or 57647 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 642210224 is about 25341.8670188287. The cubic root of 642210224 is about 862.7647743846.

The spelling of 642210224 in words is "six hundred forty-two million, two hundred ten thousand, two hundred twenty-four".