811045342 has 4 divisors (see below), whose sum is σ = 1216568016. Its totient is φ = 405522670.

The previous prime is 811045331. The next prime is 811045351. The reversal of 811045342 is 243540118.

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

It is a self number, because there is not a number n which added to its sum of digits gives 811045342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202761334 + ... + 202761337.

It is an arithmetic number, because the mean of its divisors is an integer number (304142004).

Almost surely, 2^811045342 is an apocalyptic number.

811045342 is a deficient number, since it is larger than the sum of its proper divisors (405522674).

811045342 is a wasteful number, since it uses less digits than its factorization.

811045342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405522673.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 811045342 is about 28478.8578071523. The cubic root of 811045342 is about 932.5705819541.

The spelling of 811045342 in words is "eight hundred eleven million, forty-five thousand, three hundred forty-two".