42118252 has 24 divisors (see below), whose sum is σ = 81929232. Its totient is φ = 18782400.

The previous prime is 42118249. The next prime is 42118309. The reversal of 42118252 is 25281124.

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 7 ways as a sum of consecutive naturals, for example, 6699 + ... + 11362.

It is an arithmetic number, because the mean of its divisors is an integer number (3413718).

Almost surely, 2^42118252 is an apocalyptic number.

It is an amenable number.

42118252 is a deficient number, since it is larger than the sum of its proper divisors (39810980).

42118252 is a wasteful number, since it uses less digits than its factorization.

42118252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18129 (or 18127 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 42118252 is about 6489.8576255570. The cubic root of 42118252 is about 347.9285866586.

Adding to 42118252 its reverse (25281124), we get a palindrome (67399376).

The spelling of 42118252 in words is "forty-two million, one hundred eighteen thousand, two hundred fifty-two".