842909958 has 72 divisors (see below), whose sum is σ = 2113183800. Its totient is φ = 241971840.

The previous prime is 842909927. The next prime is 842909959. The reversal of 842909958 is 859909248.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842909959) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31198 + ... + 51566.

It is an arithmetic number, because the mean of its divisors is an integer number (29349775).

Almost surely, 2^842909958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842909958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1056591900).

842909958 is an abundant number, since it is smaller than the sum of its proper divisors (1270273842).

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

842909958 is a wasteful number, since it uses less digits than its factorization.

842909958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20418 (or 20404 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 842909958 is about 29032.9116349015. The cubic root of 842909958 is about 944.6270872617.

The spelling of 842909958 in words is "eight hundred forty-two million, nine hundred nine thousand, nine hundred fifty-eight".