855091742 has 4 divisors (see below), whose sum is σ = 1282637616. Its totient is φ = 427545870.

The previous prime is 855091739. The next prime is 855091747. The reversal of 855091742 is 247190558.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 855091742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855091747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213772934 + ... + 213772937.

It is an arithmetic number, because the mean of its divisors is an integer number (320659404).

Almost surely, 2^855091742 is an apocalyptic number.

855091742 is a deficient number, since it is larger than the sum of its proper divisors (427545874).

855091742 is a wasteful number, since it uses less digits than its factorization.

855091742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427545873.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 855091742 is about 29241.9517474467. The cubic root of 855091742 is about 949.1559417039.

The spelling of 855091742 in words is "eight hundred fifty-five million, ninety-one thousand, seven hundred forty-two".