74123143 has 2 divisors, whose sum is σ = 74123144. Its totient is φ = 74123142.

The previous prime is 74123087. The next prime is 74123167. The reversal of 74123143 is 34132147.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74123143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74123243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37061571 + 37061572.

It is an arithmetic number, because the mean of its divisors is an integer number (37061572).

Almost surely, 2^74123143 is an apocalyptic number.

74123143 is a deficient number, since it is larger than the sum of its proper divisors (1).

74123143 is an equidigital number, since it uses as much as digits as its factorization.

74123143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 74123143 is about 8609.4798333000. The cubic root of 74123143 is about 420.0663972881.

The spelling of 74123143 in words is "seventy-four million, one hundred twenty-three thousand, one hundred forty-three".