842747207 has 4 divisors (see below), whose sum is σ = 843242040. Its totient is φ = 842252376.

The previous prime is 842747201. The next prime is 842747231. The reversal of 842747207 is 702747248.

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

It is a cyclic number.

It is not a de Polignac number, because 842747207 - 2⁸ = 842746951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842747201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244853 + ... + 248270.

It is an arithmetic number, because the mean of its divisors is an integer number (210810510).

Almost surely, 2^842747207 is an apocalyptic number.

842747207 is a deficient number, since it is larger than the sum of its proper divisors (494833).

842747207 is a wasteful number, since it uses less digits than its factorization.

842747207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494832.

The product of its (nonzero) digits is 175616, while the sum is 41.

The square root of 842747207 is about 29030.1086288012. The cubic root of 842747207 is about 944.5662864223.

Adding to 842747207 its sum of digits (41), we get a palindrome (842747248).

The spelling of 842747207 in words is "eight hundred forty-two million, seven hundred forty-seven thousand, two hundred seven".