842152657 has 2 divisors, whose sum is σ = 842152658. Its totient is φ = 842152656.

The previous prime is 842152643. The next prime is 842152667. The reversal of 842152657 is 756251248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 589469841 + 252682816 = 24279^2 + 15896^2 .

It is a cyclic number.

It is not a de Polignac number, because 842152657 - 2⁷ = 842152529 is a prime.

It is not a weakly prime, because it can be changed into another prime (842152667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421076328 + 421076329.

It is an arithmetic number, because the mean of its divisors is an integer number (421076329).

Almost surely, 2^842152657 is an apocalyptic number.

It is an amenable number.

842152657 is a deficient number, since it is larger than the sum of its proper divisors (1).

842152657 is an equidigital number, since it uses as much as digits as its factorization.

842152657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 842152657 is about 29019.8665916989. The cubic root of 842152657 is about 944.3441067072.

The spelling of 842152657 in words is "eight hundred forty-two million, one hundred fifty-two thousand, six hundred fifty-seven".