42171383 has 2 divisors, whose sum is σ = 42171384. Its totient is φ = 42171382.

The previous prime is 42171359. The next prime is 42171401. The reversal of 42171383 is 38317124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42171383 - 2⁶ = 42171319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42171323) 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, 21085691 + 21085692.

It is an arithmetic number, because the mean of its divisors is an integer number (21085692).

Almost surely, 2^42171383 is an apocalyptic number.

42171383 is a deficient number, since it is larger than the sum of its proper divisors (1).

42171383 is an equidigital number, since it uses as much as digits as its factorization.

42171383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 42171383 is about 6493.9497226264. The cubic root of 42171383 is about 348.0748259191.

The spelling of 42171383 in words is "forty-two million, one hundred seventy-one thousand, three hundred eighty-three".