74166143 has 2 divisors, whose sum is σ = 74166144. Its totient is φ = 74166142.

The previous prime is 74166083. The next prime is 74166149. The reversal of 74166143 is 34166147.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74166143 - 2⁸ = 74165887 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74166149) 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, 37083071 + 37083072.

It is an arithmetic number, because the mean of its divisors is an integer number (37083072).

Almost surely, 2^74166143 is an apocalyptic number.

74166143 is a deficient number, since it is larger than the sum of its proper divisors (1).

74166143 is an equidigital number, since it uses as much as digits as its factorization.

74166143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 74166143 is about 8611.9767185008. The cubic root of 74166143 is about 420.1476106250.

The spelling of 74166143 in words is "seventy-four million, one hundred sixty-six thousand, one hundred forty-three".