810042237 has 12 divisors (see below), whose sum is σ = 1186090204. Its totient is φ = 532630080.

The previous prime is 810042223. The next prime is 810042251. The reversal of 810042237 is 732240018.

It is an interprime number because it is at equal distance from previous prime (810042223) and next prime (810042251).

It can be written as a sum of positive squares in 2 ways, for example, as 695851641 + 114190596 = 26379^2 + 10686^2 .

It is not a de Polignac number, because 810042237 - 2¹⁰ = 810041213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810042237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810042137) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 615814 + ... + 617127.

Almost surely, 2^810042237 is an apocalyptic number.

It is an amenable number.

810042237 is a deficient number, since it is larger than the sum of its proper divisors (376047967).

810042237 is a wasteful number, since it uses less digits than its factorization.

810042237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233020 (or 1233017 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 810042237 is about 28461.2409602955. The cubic root of 810042237 is about 932.1859539958.

The spelling of 810042237 in words is "eight hundred ten million, forty-two thousand, two hundred thirty-seven".