842872787 has 8 divisors (see below), whose sum is σ = 850508400. Its totient is φ = 835259904.

The previous prime is 842872759. The next prime is 842872831. The reversal of 842872787 is 787278248.

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 842872787 - 2⁸ = 842872531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842872717) 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, 73763 + ... + 84419.

It is an arithmetic number, because the mean of its divisors is an integer number (106313550).

Almost surely, 2^842872787 is an apocalyptic number.

842872787 is a deficient number, since it is larger than the sum of its proper divisors (7635613).

842872787 is a wasteful number, since it uses less digits than its factorization.

842872787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11365.

The product of its digits is 2809856, while the sum is 53.

The square root of 842872787 is about 29032.2714750327. The cubic root of 842872787 is about 944.6132015359.

The spelling of 842872787 in words is "eight hundred forty-two million, eight hundred seventy-two thousand, seven hundred eighty-seven".