42515252 has 24 divisors (see below), whose sum is σ = 81327456. Its totient is φ = 19327968.

The previous prime is 42515219. The next prime is 42515267. The reversal of 42515252 is 25251524.

42515252 is nontrivially palindromic in base 3.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 2618 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (3388644).

Almost surely, 2^42515252 is an apocalyptic number.

It is an amenable number.

42515252 is a deficient number, since it is larger than the sum of its proper divisors (38812204).

42515252 is a wasteful number, since it uses less digits than its factorization.

42515252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287 (or 12285 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 42515252 is about 6520.3720752730. The cubic root of 42515252 is about 349.0183431655.

Adding to 42515252 its reverse (25251524), we get a palindrome (67766776).

The spelling of 42515252 in words is "forty-two million, five hundred fifteen thousand, two hundred fifty-two".