244042321 has 2 divisors, whose sum is σ = 244042322. Its totient is φ = 244042320.

The previous prime is 244042319. The next prime is 244042339. The reversal of 244042321 is 123240442.

It is a happy number.

244042321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124992400 + 119049921 = 11180^2 + 10911^2 .

It is a cyclic number.

It is not a de Polignac number, because 244042321 - 2¹ = 244042319 is a prime.

Together with 244042319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 244042292 and 244042301.

It is not a weakly prime, because it can be changed into another prime (244042301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122021160 + 122021161.

It is an arithmetic number, because the mean of its divisors is an integer number (122021161).

Almost surely, 2^244042321 is an apocalyptic number.

It is an amenable number.

244042321 is a deficient number, since it is larger than the sum of its proper divisors (1).

244042321 is an equidigital number, since it uses as much as digits as its factorization.

244042321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 244042321 is about 15621.8539552769. The cubic root of 244042321 is about 624.9161026585.

Adding to 244042321 its reverse (123240442), we get a palindrome (367282763).

The spelling of 244042321 in words is "two hundred forty-four million, forty-two thousand, three hundred twenty-one".