42201220 has 24 divisors (see below), whose sum is σ = 88875864. Its totient is φ = 16832256.

The previous prime is 42201179. The next prime is 42201233. The reversal of 42201220 is 2210224.

It can be written as a sum of positive squares in 4 ways, for example, as 521284 + 41679936 = 722^2 + 6456^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42201220.

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, 4632 + ... + 10288.

It is an arithmetic number, because the mean of its divisors is an integer number (3703161).

Almost surely, 2^42201220 is an apocalyptic number.

It is an amenable number.

42201220 is an abundant number, since it is smaller than the sum of its proper divisors (46674644).

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

42201220 is a wasteful number, since it uses less digits than its factorization.

42201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039 (or 6037 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 42201220 is about 6496.2466086195. The cubic root of 42201220 is about 348.1568962671.

Adding to 42201220 its reverse (2210224), we get a palindrome (44411444).

The spelling of 42201220 in words is "forty-two million, two hundred one thousand, two hundred twenty".