74139134 has 4 divisors (see below), whose sum is σ = 111208704. Its totient is φ = 37069566.

The previous prime is 74139127. The next prime is 74139139. The reversal of 74139134 is 43193147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43193147 = 1303 ⋅33149.

It is a super-2 number, since 2×74139134² = 10993222380539912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74139134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74139139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18534782 + ... + 18534785.

It is an arithmetic number, because the mean of its divisors is an integer number (27802176).

Almost surely, 2^74139134 is an apocalyptic number.

74139134 is a deficient number, since it is larger than the sum of its proper divisors (37069570).

74139134 is a wasteful number, since it uses less digits than its factorization.

74139134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37069569.

The product of its digits is 9072, while the sum is 32.

The square root of 74139134 is about 8610.4084688242. The cubic root of 74139134 is about 420.0966028735.

The spelling of 74139134 in words is "seventy-four million, one hundred thirty-nine thousand, one hundred thirty-four".