492542 has 4 divisors (see below), whose sum is σ = 738816. Its totient is φ = 246270.

The previous prime is 492523. The next prime is 492551. The reversal of 492542 is 245294.

It is a semiprime because it is the product of two primes.

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 492542.

It is an unprimeable number.

492542 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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123134 + ... + 123137.

It is an arithmetic number, because the mean of its divisors is an integer number (184704).

2⁴⁹²⁵⁴² is an apocalyptic number.

492542 is a deficient number, since it is larger than the sum of its proper divisors (246274).

492542 is a wasteful number, since it uses less digits than its factorization.

492542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246273.

The product of its digits is 2880, while the sum is 26.

The square root of 492542 is about 701.8133655040. The cubic root of 492542 is about 78.9734461843.

The spelling of 492542 in words is "four hundred ninety-two thousand, five hundred forty-two".