842104399 has 2 divisors, whose sum is σ = 842104400. Its totient is φ = 842104398.

The previous prime is 842104357. The next prime is 842104427. The reversal of 842104399 is 993401248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842104399 - 2²⁷ = 707886671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842104999) 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, 421052199 + 421052200.

It is an arithmetic number, because the mean of its divisors is an integer number (421052200).

Almost surely, 2^842104399 is an apocalyptic number.

842104399 is a deficient number, since it is larger than the sum of its proper divisors (1).

842104399 is an equidigital number, since it uses as much as digits as its factorization.

842104399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 842104399 is about 29019.0351149035. The cubic root of 842104399 is about 944.3260683986.

The spelling of 842104399 in words is "eight hundred forty-two million, one hundred four thousand, three hundred ninety-nine".