42512 has 10 divisors (see below), whose sum is σ = 82398. Its totient is φ = 21248.

The previous prime is 42509. The next prime is 42533. The reversal of 42512 is 21524.

It can be written as a sum of positive squares in only one way, i.e., 38416 + 4096 = 196^2 + 64^2 .

It is an Ulam number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313 + ... + 1344.

2⁴²⁵¹² is an apocalyptic number.

It is an amenable number.

42512 is a deficient number, since it is larger than the sum of its proper divisors (39886).

42512 is a wasteful number, since it uses less digits than its factorization.

42512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665 (or 2659 counting only the distinct ones).

The product of its digits is 80, while the sum is 14.

The square root of 42512 is about 206.1843835018. The cubic root of 42512 is about 34.9009444111.

The spelling of 42512 in words is "forty-two thousand, five hundred twelve".