42175476391 has 2 divisors, whose sum is σ = 42175476392. Its totient is φ = 42175476390.

The previous prime is 42175476389. The next prime is 42175476449. The reversal of 42175476391 is 19367457124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42175476391 - 2¹ = 42175476389 is a prime.

Together with 42175476389, 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 (42175473391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21087738195 + 21087738196.

It is an arithmetic number, because the mean of its divisors is an integer number (21087738196).

Almost surely, 2^42175476391 is an apocalyptic number.

42175476391 is a deficient number, since it is larger than the sum of its proper divisors (1).

42175476391 is an equidigital number, since it uses as much as digits as its factorization.

42175476391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The spelling of 42175476391 in words is "forty-two billion, one hundred seventy-five million, four hundred seventy-six thousand, three hundred ninety-one".