813242 has 8 divisors (see below), whose sum is σ = 1228500. Its totient is φ = 403744.

The previous prime is 813227. The next prime is 813251. The reversal of 813242 is 242318.

813242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 808201 + 5041 = 899^2 + 71^2 .

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

It is a super-2 number, since 2×813242² = 1322725101128, which contains 22 as substring.

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, 1067 + ... + 1662.

2⁸¹³²⁴² is an apocalyptic number.

813242 is a deficient number, since it is larger than the sum of its proper divisors (415258).

813242 is a wasteful number, since it uses less digits than its factorization.

813242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its digits is 384, while the sum is 20.

The square root of 813242 is about 901.7993124859. The cubic root of 813242 is about 93.3411756449.

The spelling of 813242 in words is "eight hundred thirteen thousand, two hundred forty-two".