842687250 has 64 divisors (see below), whose sum is σ = 2115434880. Its totient is φ = 223425600.

The previous prime is 842687239. The next prime is 842687257. The reversal of 842687250 is 52786248.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (842687257) 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 31 ways as a sum of consecutive naturals, for example, 131112 + ... + 137388.

It is an arithmetic number, because the mean of its divisors is an integer number (33053670).

Almost surely, 2^842687250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842687250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1057717440).

842687250 is an abundant number, since it is smaller than the sum of its proper divisors (1272747630).

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

842687250 is a wasteful number, since it uses less digits than its factorization.

842687250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476 (or 6466 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 842687250 is about 29029.0759412007. The cubic root of 842687250 is about 944.5438855950.

The spelling of 842687250 in words is "eight hundred forty-two million, six hundred eighty-seven thousand, two hundred fifty".