74243434 has 4 divisors (see below), whose sum is σ = 111365154. Its totient is φ = 37121716.

The previous prime is 74243399. The next prime is 74243443. The reversal of 74243434 is 43434247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43434247 = 19 ⋅2286013.

It can be written as a sum of positive squares in only one way, i.e., 39727809 + 34515625 = 6303^2 + 5875^2 .

It is a super-2 number, since 2×74243434² = 11024174984224712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 74243396 and 74243405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18560857 + ... + 18560860.

Almost surely, 2^74243434 is an apocalyptic number.

74243434 is a deficient number, since it is larger than the sum of its proper divisors (37121720).

74243434 is a wasteful number, since it uses less digits than its factorization.

74243434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37121719.

The product of its digits is 32256, while the sum is 31.

The square root of 74243434 is about 8616.4629634207. The cubic root of 74243434 is about 420.2935098794.

The spelling of 74243434 in words is "seventy-four million, two hundred forty-three thousand, four hundred thirty-four".