364321421 has 2 divisors, whose sum is σ = 364321422. Its totient is φ = 364321420.

The previous prime is 364321369. The next prime is 364321423. The reversal of 364321421 is 124123463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328153225 + 36168196 = 18115^2 + 6014^2 .

It is a cyclic number.

It is not a de Polignac number, because 364321421 - 2¹⁸ = 364059277 is a prime.

It is a Sophie Germain prime.

Together with 364321423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (364321423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182160710 + 182160711.

It is an arithmetic number, because the mean of its divisors is an integer number (182160711).

Almost surely, 2^364321421 is an apocalyptic number.

It is an amenable number.

364321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

364321421 is an equidigital number, since it uses as much as digits as its factorization.

364321421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 364321421 is about 19087.2056886282. The cubic root of 364321421 is about 714.2137973365.

Adding to 364321421 its reverse (124123463), we get a palindrome (488444884).

The spelling of 364321421 in words is "three hundred sixty-four million, three hundred twenty-one thousand, four hundred twenty-one".