842972441 has 2 divisors, whose sum is σ = 842972442. Its totient is φ = 842972440.

The previous prime is 842972399. The next prime is 842972447. The reversal of 842972441 is 144279248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698492041 + 144480400 = 26429^2 + 12020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842972441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (842972447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421486220 + 421486221.

It is an arithmetic number, because the mean of its divisors is an integer number (421486221).

Almost surely, 2^842972441 is an apocalyptic number.

It is an amenable number.

842972441 is a deficient number, since it is larger than the sum of its proper divisors (1).

842972441 is an equidigital number, since it uses as much as digits as its factorization.

842972441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 842972441 is about 29033.9876868473. The cubic root of 842972441 is about 944.6504277049.

The spelling of 842972441 in words is "eight hundred forty-two million, nine hundred seventy-two thousand, four hundred forty-one".