842919541 has 2 divisors, whose sum is σ = 842919542. Its totient is φ = 842919540.

The previous prime is 842919527. The next prime is 842919547. The reversal of 842919541 is 145919248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438064900 + 404854641 = 20930^2 + 20121^2 .

It is a cyclic number.

It is not a de Polignac number, because 842919541 - 2⁵ = 842919509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842919547) 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, 421459770 + 421459771.

It is an arithmetic number, because the mean of its divisors is an integer number (421459771).

Almost surely, 2^842919541 is an apocalyptic number.

It is an amenable number.

842919541 is a deficient number, since it is larger than the sum of its proper divisors (1).

842919541 is an equidigital number, since it uses as much as digits as its factorization.

842919541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 43.

The square root of 842919541 is about 29033.0766712727. The cubic root of 842919541 is about 944.6306670538.

The spelling of 842919541 in words is "eight hundred forty-two million, nine hundred nineteen thousand, five hundred forty-one".