74212243 has 8 divisors (see below), whose sum is σ = 86414688. Its totient is φ = 62409984.

The previous prime is 74212231. The next prime is 74212267. The reversal of 74212243 is 34221247.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74212243 - 2⁵ = 74212211 is a prime.

It is a super-2 number, since 2×74212243² = 11014914022182098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74212213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99646 + ... + 100387.

It is an arithmetic number, because the mean of its divisors is an integer number (10801836).

Almost surely, 2^74212243 is an apocalyptic number.

74212243 is a deficient number, since it is larger than the sum of its proper divisors (12202445).

74212243 is a wasteful number, since it uses less digits than its factorization.

74212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200093.

The product of its digits is 2688, while the sum is 25.

The square root of 74212243 is about 8614.6528078617. The cubic root of 74212243 is about 420.2346440178.

The spelling of 74212243 in words is "seventy-four million, two hundred twelve thousand, two hundred forty-three".