842051111 has 8 divisors (see below), whose sum is σ = 919261200. Its totient is φ = 764951040.

The previous prime is 842051099. The next prime is 842051113. The reversal of 842051111 is 111150248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 842051111 - 2¹⁴ = 842034727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842051113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11066 + ... + 42503.

It is an arithmetic number, because the mean of its divisors is an integer number (114907650).

Almost surely, 2^842051111 is an apocalyptic number.

842051111 is a deficient number, since it is larger than the sum of its proper divisors (77210089).

842051111 is a wasteful number, since it uses less digits than its factorization.

842051111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55009.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 842051111 is about 29018.1169444194. The cubic root of 842051111 is about 944.3061491309.

The spelling of 842051111 in words is "eight hundred forty-two million, fifty-one thousand, one hundred eleven".