74549243 has 4 divisors (see below), whose sum is σ = 74573088. Its totient is φ = 74525400.

The previous prime is 74549231. The next prime is 74549249. The reversal of 74549243 is 34294547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74549243 - 2¹⁶ = 74483707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74549197 and 74549206.

It is not an unprimeable number, because it can be changed into a prime (74549249) 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, 6371 + ... + 13772.

It is an arithmetic number, because the mean of its divisors is an integer number (18643272).

Almost surely, 2^74549243 is an apocalyptic number.

74549243 is a deficient number, since it is larger than the sum of its proper divisors (23845).

74549243 is a wasteful number, since it uses less digits than its factorization.

74549243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23844.

The product of its digits is 120960, while the sum is 38.

The square root of 74549243 is about 8634.1903499981. The cubic root of 74549243 is about 420.8697829249.

The spelling of 74549243 in words is "seventy-four million, five hundred forty-nine thousand, two hundred forty-three".