74142178 has 16 divisors (see below), whose sum is σ = 121474080. Its totient is φ = 33659200.

The previous prime is 74142143. The next prime is 74142193. The reversal of 74142178 is 87124147.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22458 + ... + 25546.

It is an arithmetic number, because the mean of its divisors is an integer number (7592130).

Almost surely, 2^74142178 is an apocalyptic number.

74142178 is a deficient number, since it is larger than the sum of its proper divisors (47331902).

74142178 is a wasteful number, since it uses less digits than its factorization.

74142178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193.

The product of its digits is 12544, while the sum is 34.

The square root of 74142178 is about 8610.5852298203. The cubic root of 74142178 is about 420.1023522283.

The spelling of 74142178 in words is "seventy-four million, one hundred forty-two thousand, one hundred seventy-eight".