842257136 has 40 divisors (see below), whose sum is σ = 1867868544. Its totient is φ = 360411840.

The previous prime is 842257127. The next prime is 842257153. The reversal of 842257136 is 631752248.

It is a happy number.

842257136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 842257136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71951 + ... + 82833.

Almost surely, 2^842257136 is an apocalyptic number.

It is an amenable number.

842257136 is an abundant number, since it is smaller than the sum of its proper divisors (1025611408).

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

842257136 is a wasteful number, since it uses less digits than its factorization.

842257136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11589 (or 11583 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 842257136 is about 29021.6666647524. Note that the first 5 decimals coincide. The cubic root of 842257136 is about 944.3831574451.

The spelling of 842257136 in words is "eight hundred forty-two million, two hundred fifty-seven thousand, one hundred thirty-six".