492145 has 4 divisors (see below), whose sum is σ = 590580. Its totient is φ = 393712.

The previous prime is 492113. The next prime is 492227. The reversal of 492145 is 541294.

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

It can be written as a sum of positive squares in 2 ways, for example, as 269361 + 222784 = 519^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 492145 - 2⁵ = 492113 is a prime.

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

492145 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49210 + ... + 49219.

It is an arithmetic number, because the mean of its divisors is an integer number (147645).

2⁴⁹²¹⁴⁵ is an apocalyptic number.

It is an amenable number.

492145 is a deficient number, since it is larger than the sum of its proper divisors (98435).

492145 is an equidigital number, since it uses as much as digits as its factorization.

492145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98434.

The product of its digits is 1440, while the sum is 25.

The square root of 492145 is about 701.5304697588. The cubic root of 492145 is about 78.9522223526.

It can be divided in two parts, 4921 and 45, that multiplied together give a triangular number (221445 = T₆₆₅).

The spelling of 492145 in words is "four hundred ninety-two thousand, one hundred forty-five".