492139 has 4 divisors (see below), whose sum is σ = 495040. Its totient is φ = 489240.

The previous prime is 492113. The next prime is 492227. The reversal of 492139 is 931294.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 492139 - 2⁹ = 491627 is a prime.

It is a Duffinian number.

492139 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179 + ... + 1540.

It is an arithmetic number, because the mean of its divisors is an integer number (123760).

2⁴⁹²¹³⁹ is an apocalyptic number.

492139 is a deficient number, since it is larger than the sum of its proper divisors (2901).

492139 is a wasteful number, since it uses less digits than its factorization.

492139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900.

The product of its digits is 1944, while the sum is 28.

The square root of 492139 is about 701.5261933813. The cubic root of 492139 is about 78.9519015019.

The spelling of 492139 in words is "four hundred ninety-two thousand, one hundred thirty-nine".