42540112 has 10 divisors (see below), whose sum is σ = 82421498. Its totient is φ = 21270048.

The previous prime is 42540101. The next prime is 42540139. The reversal of 42540112 is 21104524.

It can be written as a sum of positive squares in only one way, i.e., 22505536 + 20034576 = 4744^2 + 4476^2 .

It is a super-2 number, since 2×42540112² = 3619322257945088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42540112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329363 + ... + 1329394.

Almost surely, 2^42540112 is an apocalyptic number.

It is an amenable number.

42540112 is a deficient number, since it is larger than the sum of its proper divisors (39881386).

42540112 is a wasteful number, since it uses less digits than its factorization.

42540112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658765 (or 2658759 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42540112 is about 6522.2781296108. The cubic root of 42540112 is about 349.0863572310.

Adding to 42540112 its reverse (21104524), we get a palindrome (63644636).

The spelling of 42540112 in words is "forty-two million, five hundred forty thousand, one hundred twelve".