74240843 has 4 divisors (see below), whose sum is σ = 75457968. Its totient is φ = 73023720.

The previous prime is 74240839. The next prime is 74240867. The reversal of 74240843 is 34804247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34804247 = 653 ⋅53299.

It is a cyclic number.

It is not a de Polignac number, because 74240843 - 2² = 74240839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74240813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608471 + ... + 608592.

It is an arithmetic number, because the mean of its divisors is an integer number (18864492).

Almost surely, 2^74240843 is an apocalyptic number.

74240843 is a deficient number, since it is larger than the sum of its proper divisors (1217125).

74240843 is a wasteful number, since it uses less digits than its factorization.

74240843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217124.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 74240843 is about 8616.3126103920. The cubic root of 74240843 is about 420.2886205889.

The spelling of 74240843 in words is "seventy-four million, two hundred forty thousand, eight hundred forty-three".