363442721 has 2 divisors, whose sum is σ = 363442722. Its totient is φ = 363442720.

The previous prime is 363442693. The next prime is 363442747. The reversal of 363442721 is 127244363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297183121 + 66259600 = 17239^2 + 8140^2 .

It is a cyclic number.

It is not a de Polignac number, because 363442721 - 2²⁶ = 296333857 is a prime.

It is a super-2 number, since 2×363442721² = 264181222895767682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (363442771) 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 as a sum of consecutive naturals, namely, 181721360 + 181721361.

It is an arithmetic number, because the mean of its divisors is an integer number (181721361).

Almost surely, 2^363442721 is an apocalyptic number.

It is an amenable number.

363442721 is a deficient number, since it is larger than the sum of its proper divisors (1).

363442721 is an equidigital number, since it uses as much as digits as its factorization.

363442721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 32.

The square root of 363442721 is about 19064.1737560273. The cubic root of 363442721 is about 713.6391354639.

The spelling of 363442721 in words is "three hundred sixty-three million, four hundred forty-two thousand, seven hundred twenty-one".