74223421 has 8 divisors (see below), whose sum is σ = 75132288. Its totient is φ = 73320000.

The previous prime is 74223403. The next prime is 74223427. The reversal of 74223421 is 12432247.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 74223421 - 2⁵ = 74223389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74223427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30396 + ... + 32746.

It is an arithmetic number, because the mean of its divisors is an integer number (9391536).

Almost surely, 2^74223421 is an apocalyptic number.

It is an amenable number.

74223421 is a deficient number, since it is larger than the sum of its proper divisors (908867).

74223421 is a wasteful number, since it uses less digits than its factorization.

74223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723.

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

The square root of 74223421 is about 8615.3015617563. The cubic root of 74223421 is about 420.2557418261.

Adding to 74223421 its reverse (12432247), we get a palindrome (86655668).

The spelling of 74223421 in words is "seventy-four million, two hundred twenty-three thousand, four hundred twenty-one".