842291077 has 2 divisors, whose sum is σ = 842291078. Its totient is φ = 842291076.

The previous prime is 842291063. The next prime is 842291081. The reversal of 842291077 is 770192248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496665796 + 345625281 = 22286^2 + 18591^2 .

It is a cyclic number.

It is not a de Polignac number, because 842291077 - 2¹¹ = 842289029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842291017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421145538 + 421145539.

It is an arithmetic number, because the mean of its divisors is an integer number (421145539).

Almost surely, 2^842291077 is an apocalyptic number.

It is an amenable number.

842291077 is a deficient number, since it is larger than the sum of its proper divisors (1).

842291077 is an equidigital number, since it uses as much as digits as its factorization.

842291077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 842291077 is about 29022.2514116324. The cubic root of 842291077 is about 944.3958427549.

It can be divided in two parts, 8422 and 91077, that added together give a palindrome (99499).

The spelling of 842291077 in words is "eight hundred forty-two million, two hundred ninety-one thousand, seventy-seven".