855384042 has 32 divisors (see below), whose sum is σ = 1747490112. Its totient is φ = 279062784.

The previous prime is 855383983. The next prime is 855384059. The reversal of 855384042 is 240483558.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56338 + ... + 69890.

It is an arithmetic number, because the mean of its divisors is an integer number (54609066).

Almost surely, 2^855384042 is an apocalyptic number.

855384042 is an abundant number, since it is smaller than the sum of its proper divisors (892106070).

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

855384042 is a wasteful number, since it uses less digits than its factorization.

855384042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782.

The product of its (nonzero) digits is 153600, while the sum is 39.

The square root of 855384042 is about 29246.9492768049. The cubic root of 855384042 is about 949.2640808510.

The spelling of 855384042 in words is "eight hundred fifty-five million, three hundred eighty-four thousand, forty-two".