492187 has 4 divisors (see below), whose sum is σ = 508096. Its totient is φ = 476280.

The previous prime is 492113. The next prime is 492227. The reversal of 492187 is 781294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781294 = 2 ⋅390647.

It is a cyclic number.

It is not a de Polignac number, because 492187 - 2⁷ = 492059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 15877 = 492187 / (4 + 9 + 2 + 1 + 8 + 7).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 5.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (492487) 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, 7908 + ... + 7969.

It is an arithmetic number, because the mean of its divisors is an integer number (127024).

2⁴⁹²¹⁸⁷ is an apocalyptic number.

492187 is a deficient number, since it is larger than the sum of its proper divisors (15909).

492187 is a wasteful number, since it uses less digits than its factorization.

492187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15908.

The product of its digits is 4032, while the sum is 31.

The square root of 492187 is about 701.5604036717. The cubic root of 492187 is about 78.9544682348.

The spelling of 492187 in words is "four hundred ninety-two thousand, one hundred eighty-seven".