74201321 has 4 divisors (see below), whose sum is σ = 76594944. Its totient is φ = 71807700.

The previous prime is 74201299. The next prime is 74201339. The reversal of 74201321 is 12310247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12310247 = 269 ⋅45763.

It is a cyclic number.

It is not a de Polignac number, because 74201321 - 2¹⁰ = 74200297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74201293 and 74201302.

It is not an unprimeable number, because it can be changed into a prime (74201221) 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 3 ways as a sum of consecutive naturals, for example, 1196765 + ... + 1196826.

It is an arithmetic number, because the mean of its divisors is an integer number (19148736).

Almost surely, 2^74201321 is an apocalyptic number.

It is an amenable number.

74201321 is a deficient number, since it is larger than the sum of its proper divisors (2393623).

74201321 is a wasteful number, since it uses less digits than its factorization.

74201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393622.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 74201321 is about 8614.0188646183. The cubic root of 74201321 is about 420.2140273479.

Adding to 74201321 its reverse (12310247), we get a palindrome (86511568).

The spelling of 74201321 in words is "seventy-four million, two hundred one thousand, three hundred twenty-one".