4242642660 has 36 divisors (see below), whose sum is σ = 12869349948. Its totient is φ = 1131371328.

The previous prime is 4242642647. The next prime is 4242642707. The reversal of 4242642660 is 662462424.

4242642660 is a `hidden beast` number, since 4 + 2 + 4 + 2 + 642 + 6 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2915352036 + 1327290624 = 53994^2 + 36432^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11784939 + ... + 11785298.

It is an arithmetic number, because the mean of its divisors is an integer number (357481943).

Almost surely, 2^4242642660 is an apocalyptic number.

It is an amenable number.

4242642660 is an abundant number, since it is smaller than the sum of its proper divisors (8626707288).

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

4242642660 is a wasteful number, since it uses less digits than its factorization.

4242642660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23570252 (or 23570247 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 4242642660 is about 65135.5713876834. The cubic root of 4242642660 is about 1618.8706577922.

The spelling of 4242642660 in words is "four billion, two hundred forty-two million, six hundred forty-two thousand, six hundred sixty".