842725361 has 2 divisors, whose sum is σ = 842725362. Its totient is φ = 842725360.

The previous prime is 842725339. The next prime is 842725363. The reversal of 842725361 is 163527248.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780867136 + 61858225 = 27944^2 + 7865^2 .

It is a cyclic number.

It is not a de Polignac number, because 842725361 - 2¹⁸ = 842463217 is a prime.

Together with 842725363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (842725363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421362680 + 421362681.

It is an arithmetic number, because the mean of its divisors is an integer number (421362681).

Almost surely, 2^842725361 is an apocalyptic number.

It is an amenable number.

842725361 is a deficient number, since it is larger than the sum of its proper divisors (1).

842725361 is an equidigital number, since it uses as much as digits as its factorization.

842725361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 842725361 is about 29029.7323618390. The cubic root of 842725361 is about 944.5581245547.

The spelling of 842725361 in words is "eight hundred forty-two million, seven hundred twenty-five thousand, three hundred sixty-one".