74126945 has 4 divisors (see below), whose sum is σ = 88952340. Its totient is φ = 59301552.

The previous prime is 74126939. The next prime is 74126981. The reversal of 74126945 is 54962147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54962147 = 4391 ⋅12517.

It can be written as a sum of positive squares in 2 ways, for example, as 22344529 + 51782416 = 4727^2 + 7196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74126945 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74126899 and 74126908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7412690 + ... + 7412699.

It is an arithmetic number, because the mean of its divisors is an integer number (22238085).

Almost surely, 2^74126945 is an apocalyptic number.

It is an amenable number.

74126945 is a deficient number, since it is larger than the sum of its proper divisors (14825395).

74126945 is a wasteful number, since it uses less digits than its factorization.

74126945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825394.

The product of its digits is 60480, while the sum is 38.

The square root of 74126945 is about 8609.7006335877. The cubic root of 74126945 is about 420.0735793236.

The spelling of 74126945 in words is "seventy-four million, one hundred twenty-six thousand, nine hundred forty-five".