612542 has 8 divisors (see below), whose sum is σ = 1050096. Its totient is φ = 262512.

The previous prime is 612511. The next prime is 612553. The reversal of 612542 is 245216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 612542.

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 3 ways as a sum of consecutive naturals, for example, 21863 + ... + 21890.

It is an arithmetic number, because the mean of its divisors is an integer number (131262).

2⁶¹²⁵⁴² is an apocalyptic number.

612542 is a deficient number, since it is larger than the sum of its proper divisors (437554).

612542 is a wasteful number, since it uses less digits than its factorization.

612542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43762.

The product of its digits is 480, while the sum is 20.

The square root of 612542 is about 782.6506244807. The cubic root of 612542 is about 84.9269037097.

Adding to 612542 its reverse (245216), we get a palindrome (857758).

The spelling of 612542 in words is "six hundred twelve thousand, five hundred forty-two".