842716261 has 2 divisors, whose sum is σ = 842716262. Its totient is φ = 842716260.

The previous prime is 842716211. The next prime is 842716283. The reversal of 842716261 is 162617248.

842716261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734681025 + 108035236 = 27105^2 + 10394^2 .

It is a cyclic number.

It is not a de Polignac number, because 842716261 - 2¹⁵ = 842683493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842716261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842716201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421358130 + 421358131.

It is an arithmetic number, because the mean of its divisors is an integer number (421358131).

Almost surely, 2^842716261 is an apocalyptic number.

It is an amenable number.

842716261 is a deficient number, since it is larger than the sum of its proper divisors (1).

842716261 is an equidigital number, since it uses as much as digits as its factorization.

842716261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 842716261 is about 29029.5756255582. The cubic root of 842716261 is about 944.5547246690.

The spelling of 842716261 in words is "eight hundred forty-two million, seven hundred sixteen thousand, two hundred sixty-one".