542512 has 20 divisors (see below), whose sum is σ = 1078056. Its totient is φ = 264320.

The previous prime is 542497. The next prime is 542519. The reversal of 542512 is 215245.

It is a self number, because there is not a number n which added to its sum of digits gives 542512.

It is not an unprimeable number, because it can be changed into a prime (542519) by changing a digit.

542512 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243 + ... + 1069.

2⁵⁴²⁵¹² is an apocalyptic number.

It is an amenable number.

542512 is a deficient number, since it is larger than the sum of its proper divisors (535544).

542512 is a wasteful number, since it uses less digits than its factorization.

542512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 870 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 542512 is about 736.5541392186. The cubic root of 542512 is about 81.5586038910.

Adding to 542512 its reverse (215245), we get a palindrome (757757).

The spelling of 542512 in words is "five hundred forty-two thousand, five hundred twelve".