42518312 has 16 divisors (see below), whose sum is σ = 81666900. Its totient is φ = 20740480.

The previous prime is 42518261. The next prime is 42518317. The reversal of 42518312 is 21381524.

It can be written as a sum of positive squares in 2 ways, for example, as 29658916 + 12859396 = 5446^2 + 3586^2 .

It is not an unprimeable number, because it can be changed into a prime (42518317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64487 + ... + 65142.

Almost surely, 2^42518312 is an apocalyptic number.

It is an amenable number.

42518312 is a deficient number, since it is larger than the sum of its proper divisors (39148588).

42518312 is a wasteful number, since it uses less digits than its factorization.

42518312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129676 (or 129672 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 42518312 is about 6520.6067202370. The cubic root of 42518312 is about 349.0267163999.

Adding to 42518312 its reverse (21381524), we get a palindrome (63899836).

The spelling of 42518312 in words is "forty-two million, five hundred eighteen thousand, three hundred twelve".