74042143 has 16 divisors (see below), whose sum is σ = 87629824. Its totient is φ = 61236000.

The previous prime is 74042099. The next prime is 74042159. The reversal of 74042143 is 34124047.

It is not a de Polignac number, because 74042143 - 2⁹ = 74041631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74042743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31768 + ... + 34018.

It is an arithmetic number, because the mean of its divisors is an integer number (5476864).

Almost surely, 2^74042143 is an apocalyptic number.

74042143 is a deficient number, since it is larger than the sum of its proper divisors (13587681).

74042143 is a wasteful number, since it uses less digits than its factorization.

74042143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 74042143 is about 8604.7744305124. The cubic root of 74042143 is about 419.9133286766.

The spelling of 74042143 in words is "seventy-four million, forty-two thousand, one hundred forty-three".