842509250 has 32 divisors (see below), whose sum is σ = 1720562688. Its totient is φ = 306366000.

The previous prime is 842509243. The next prime is 842509259. The reversal of 842509250 is 52905248.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 842509250.

It is not an unprimeable number, because it can be changed into a prime (842509259) 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, 150434 + ... + 155933.

It is an arithmetic number, because the mean of its divisors is an integer number (53767584).

Almost surely, 2^842509250 is an apocalyptic number.

842509250 is an abundant number, since it is smaller than the sum of its proper divisors (878053438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842509250 is a wasteful number, since it uses less digits than its factorization.

842509250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306395 (or 306385 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 842509250 is about 29026.0098876852. The cubic root of 842509250 is about 944.4773758862.

The spelling of 842509250 in words is "eight hundred forty-two million, five hundred nine thousand, two hundred fifty".