74340321 has 16 divisors (see below), whose sum is σ = 108380160. Its totient is φ = 44951120.

The previous prime is 74340313. The next prime is 74340341. The reversal of 74340321 is 12304347.

It is a cyclic number.

It is not a de Polignac number, because 74340321 - 2³ = 74340313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74340291 and 74340300.

It is not an unprimeable number, because it can be changed into a prime (74340341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13456 + ... + 18158.

It is an arithmetic number, because the mean of its divisors is an integer number (6773760).

Almost surely, 2^74340321 is an apocalyptic number.

It is an amenable number.

74340321 is a deficient number, since it is larger than the sum of its proper divisors (34039839).

74340321 is a wasteful number, since it uses less digits than its factorization.

74340321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 74340321 is about 8622.0833329306. The cubic root of 74340321 is about 420.4762567991.

Adding to 74340321 its reverse (12304347), we get a palindrome (86644668).

The spelling of 74340321 in words is "seventy-four million, three hundred forty thousand, three hundred twenty-one".