74146321 has 2 divisors, whose sum is σ = 74146322. Its totient is φ = 74146320.

The previous prime is 74146313. The next prime is 74146337. The reversal of 74146321 is 12364147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61465600 + 12680721 = 7840^2 + 3561^2 .

It is a cyclic number.

It is not a de Polignac number, because 74146321 - 2³ = 74146313 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74146321.

It is not a weakly prime, because it can be changed into another prime (74146351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37073160 + 37073161.

It is an arithmetic number, because the mean of its divisors is an integer number (37073161).

Almost surely, 2^74146321 is an apocalyptic number.

It is an amenable number.

74146321 is a deficient number, since it is larger than the sum of its proper divisors (1).

74146321 is an equidigital number, since it uses as much as digits as its factorization.

74146321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 74146321 is about 8610.8258024419. The cubic root of 74146321 is about 420.1101770664.

The spelling of 74146321 in words is "seventy-four million, one hundred forty-six thousand, three hundred twenty-one".