1042401104191 has 2 divisors, whose sum is σ = 1042401104192. Its totient is φ = 1042401104190.

The previous prime is 1042401104189. The next prime is 1042401104333. The reversal of 1042401104191 is 1914011042401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1042401104191 - 2¹ = 1042401104189 is a prime.

Together with 1042401104189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042401104891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521200552095 + 521200552096.

It is an arithmetic number, because the mean of its divisors is an integer number (521200552096).

Almost surely, 2^{1042401104191} is an apocalyptic number.

1042401104191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042401104191 is an equidigital number, since it uses as much as digits as its factorization.

1042401104191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 1042401104191 its reverse (1914011042401), we get a palindrome (2956412146592).

The spelling of 1042401104191 in words is "one trillion, forty-two billion, four hundred one million, one hundred four thousand, one hundred ninety-one".