842975761 has 2 divisors, whose sum is σ = 842975762. Its totient is φ = 842975760.

The previous prime is 842975743. The next prime is 842975789. The reversal of 842975761 is 167579248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830592400 + 12383361 = 28820^2 + 3519^2 .

It is a cyclic number.

It is not a de Polignac number, because 842975761 - 2⁵ = 842975729 is a prime.

It is not a weakly prime, because it can be changed into another prime (842975701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421487880 + 421487881.

It is an arithmetic number, because the mean of its divisors is an integer number (421487881).

Almost surely, 2^842975761 is an apocalyptic number.

It is an amenable number.

842975761 is a deficient number, since it is larger than the sum of its proper divisors (1).

842975761 is an equidigital number, since it uses as much as digits as its factorization.

842975761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 842975761 is about 29034.0448611626. The cubic root of 842975761 is about 944.6516678543.

The spelling of 842975761 in words is "eight hundred forty-two million, nine hundred seventy-five thousand, seven hundred sixty-one".