42513252 has 12 divisors (see below), whose sum is σ = 99197616. Its totient is φ = 14171080.

The previous prime is 42513227. The next prime is 42513281. The reversal of 42513252 is 25231524.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1771374 + ... + 1771397.

It is an arithmetic number, because the mean of its divisors is an integer number (8266468).

Almost surely, 2^42513252 is an apocalyptic number.

It is an amenable number.

42513252 is an abundant number, since it is smaller than the sum of its proper divisors (56684364).

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

42513252 is a wasteful number, since it uses less digits than its factorization.

42513252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542778 (or 3542776 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 42513252 is about 6520.2187079883. The cubic root of 42513252 is about 349.0128702462.

Adding to 42513252 its reverse (25231524), we get a palindrome (67744776).

It can be divided in two parts, 4251 and 3252, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 42513252 in words is "forty-two million, five hundred thirteen thousand, two hundred fifty-two".