42224660 has 24 divisors (see below), whose sum is σ = 89889576. Its totient is φ = 16657920.

The previous prime is 42224657. The next prime is 42224681. The reversal of 42224660 is 6642224.

It can be written as a sum of positive squares in 4 ways, for example, as 9024016 + 33200644 = 3004^2 + 5762^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13001 + ... + 15920.

It is an arithmetic number, because the mean of its divisors is an integer number (3745399).

Almost surely, 2^42224660 is an apocalyptic number.

It is an amenable number.

42224660 is an abundant number, since it is smaller than the sum of its proper divisors (47664916).

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

42224660 is a wasteful number, since it uses less digits than its factorization.

42224660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29003 (or 29001 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 42224660 is about 6498.0504768738. The cubic root of 42224660 is about 348.2213437497.

Adding to 42224660 its reverse (6642224), we get a palindrome (48866884).

The spelling of 42224660 in words is "forty-two million, two hundred twenty-four thousand, six hundred sixty".