842813537 has 2 divisors, whose sum is σ = 842813538. Its totient is φ = 842813536.

The previous prime is 842813527. The next prime is 842813549. The reversal of 842813537 is 735318248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 707347216 + 135466321 = 26596^2 + 11639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842813537 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 842813494 and 842813503.

It is not a weakly prime, because it can be changed into another prime (842813527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421406768 + 421406769.

It is an arithmetic number, because the mean of its divisors is an integer number (421406769).

Almost surely, 2^842813537 is an apocalyptic number.

It is an amenable number.

842813537 is a deficient number, since it is larger than the sum of its proper divisors (1).

842813537 is an equidigital number, since it uses as much as digits as its factorization.

842813537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The square root of 842813537 is about 29031.2510409042. The cubic root of 842813537 is about 944.5910670594.

The spelling of 842813537 in words is "eight hundred forty-two million, eight hundred thirteen thousand, five hundred thirty-seven".