74478123 has 20 divisors (see below), whose sum is σ = 111959848. Its totient is φ = 49338720.

The previous prime is 74478101. The next prime is 74478143. The reversal of 74478123 is 32187447.

It is a happy number.

It is not a de Polignac number, because 74478123 - 2⁶ = 74478059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74478143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10383 + ... + 16023.

Almost surely, 2^74478123 is an apocalyptic number.

74478123 is a deficient number, since it is larger than the sum of its proper divisors (37481725).

74478123 is a wasteful number, since it uses less digits than its factorization.

74478123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5807 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 74478123 is about 8630.0708571830. The cubic root of 74478123 is about 420.7359037095.

The spelling of 74478123 in words is "seventy-four million, four hundred seventy-eight thousand, one hundred twenty-three".