42790252 has 12 divisors (see below), whose sum is σ = 75019896. Its totient is φ = 21356000.

The previous prime is 42790249. The next prime is 42790313. The reversal of 42790252 is 25209724.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7249 + ... + 11752.

It is an arithmetic number, because the mean of its divisors is an integer number (6251658).

Almost surely, 2^42790252 is an apocalyptic number.

It is an amenable number.

42790252 is a deficient number, since it is larger than the sum of its proper divisors (32229644).

42790252 is a wasteful number, since it uses less digits than its factorization.

42790252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19568 (or 19566 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 42790252 is about 6541.4258384545. The cubic root of 42790252 is about 349.7692410888.

Adding to 42790252 its reverse (25209724), we get a palindrome (67999976).

The spelling of 42790252 in words is "forty-two million, seven hundred ninety thousand, two hundred fifty-two".