244131421 has 2 divisors, whose sum is σ = 244131422. Its totient is φ = 244131420.

The previous prime is 244131413. The next prime is 244131427. The reversal of 244131421 is 124131442.

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., 207043321 + 37088100 = 14389^2 + 6090^2 .

It is a cyclic number.

It is not a de Polignac number, because 244131421 - 2³ = 244131413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244131392 and 244131401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244131427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122065710 + 122065711.

It is an arithmetic number, because the mean of its divisors is an integer number (122065711).

Almost surely, 2^244131421 is an apocalyptic number.

It is an amenable number.

244131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

244131421 is an equidigital number, since it uses as much as digits as its factorization.

244131421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 22.

The square root of 244131421 is about 15624.7054692241. The cubic root of 244131421 is about 624.9921458213.

Adding to 244131421 its reverse (124131442), we get a palindrome (368262863).

The spelling of 244131421 in words is "two hundred forty-four million, one hundred thirty-one thousand, four hundred twenty-one".