42201252 has 18 divisors (see below), whose sum is σ = 106675478. Its totient is φ = 14067072.

The previous prime is 42201239. The next prime is 42201281. The reversal of 42201252 is 25210224.

It can be written as a sum of positive squares in only one way, i.e., 40144896 + 2056356 = 6336^2 + 1434^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586093 + ... + 586164.

Almost surely, 2^42201252 is an apocalyptic number.

It is an amenable number.

42201252 is an abundant number, since it is smaller than the sum of its proper divisors (64474226).

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

42201252 is a wasteful number, since it uses less digits than its factorization.

42201252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172267 (or 1172262 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42201252 is about 6496.2490715797. The cubic root of 42201252 is about 348.1569842662.

Adding to 42201252 its reverse (25210224), we get a palindrome (67411476).

The spelling of 42201252 in words is "forty-two million, two hundred one thousand, two hundred fifty-two".