842594251 has 16 divisors (see below), whose sum is σ = 867121344. Its totient is φ = 818532864.

The previous prime is 842594243. The next prime is 842594257. The reversal of 842594251 is 152495248.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 842594251 - 2³ = 842594243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842594257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729930 + ... + 1730416.

It is an arithmetic number, because the mean of its divisors is an integer number (54195084).

Almost surely, 2^842594251 is an apocalyptic number.

842594251 is the 23701-st pentagonal number.

842594251 is a deficient number, since it is larger than the sum of its proper divisors (24527093).

842594251 is a wasteful number, since it uses less digits than its factorization.

842594251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870.

The product of its digits is 115200, while the sum is 40.

The square root of 842594251 is about 29027.4740719891. The cubic root of 842594251 is about 944.5091376826.

The spelling of 842594251 in words is "eight hundred forty-two million, five hundred ninety-four thousand, two hundred fifty-one".