73363421 has 2 divisors, whose sum is σ = 73363422. Its totient is φ = 73363420.

The previous prime is 73363397. The next prime is 73363439. The reversal of 73363421 is 12436337.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72914521 + 448900 = 8539^2 + 670^2 .

It is an emirp because it is prime and its reverse (12436337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73363421 - 2⁶ = 73363357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73363441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36681710 + 36681711.

It is an arithmetic number, because the mean of its divisors is an integer number (36681711).

Almost surely, 2^73363421 is an apocalyptic number.

It is an amenable number.

73363421 is a deficient number, since it is larger than the sum of its proper divisors (1).

73363421 is an equidigital number, since it uses as much as digits as its factorization.

73363421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 29.

The square root of 73363421 is about 8565.2449468769. The cubic root of 73363421 is about 418.6263151159.

Adding to 73363421 its reverse (12436337), we get a palindrome (85799758).

The spelling of 73363421 in words is "seventy-three million, three hundred sixty-three thousand, four hundred twenty-one".