811653242 has 8 divisors (see below), whose sum is σ = 1222109856. Its totient is φ = 404283292.

The previous prime is 811653239. The next prime is 811653257. The reversal of 811653242 is 242356118.

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

It is a super-2 number, since 2×811653242² = 1317561970498221128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 811653199 and 811653208.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 771008 + ... + 772059.

It is an arithmetic number, because the mean of its divisors is an integer number (152763732).

Almost surely, 2^811653242 is an apocalyptic number.

811653242 is a deficient number, since it is larger than the sum of its proper divisors (410456614).

811653242 is a wasteful number, since it uses less digits than its factorization.

811653242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543332.

The product of its digits is 11520, while the sum is 32.

The square root of 811653242 is about 28489.5286377293. The cubic root of 811653242 is about 932.8035192300.

The spelling of 811653242 in words is "eight hundred eleven million, six hundred fifty-three thousand, two hundred forty-two".