74154143 has 4 divisors (see below), whose sum is σ = 84747600. Its totient is φ = 63560688.

The previous prime is 74154133. The next prime is 74154161. The reversal of 74154143 is 34145147.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74154143 - 2¹⁸ = 73891999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74154133) 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 in 3 ways as a sum of consecutive naturals, for example, 5296718 + ... + 5296731.

It is an arithmetic number, because the mean of its divisors is an integer number (21186900).

Almost surely, 2^74154143 is an apocalyptic number.

74154143 is a deficient number, since it is larger than the sum of its proper divisors (10593457).

74154143 is a wasteful number, since it uses less digits than its factorization.

74154143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10593456.

The product of its digits is 6720, while the sum is 29.

The square root of 74154143 is about 8611.2799861577. The cubic root of 74154143 is about 420.1249495964.

The spelling of 74154143 in words is "seventy-four million, one hundred fifty-four thousand, one hundred forty-three".