1244039201 has 2 divisors, whose sum is σ = 1244039202. Its totient is φ = 1244039200.

The previous prime is 1244039177. The next prime is 1244039213. The reversal of 1244039201 is 1029304421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 765960976 + 478078225 = 27676^2 + 21865^2 .

It is an emirp because it is prime and its reverse (1029304421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244039201 - 2¹⁰ = 1244038177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244039101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622019600 + 622019601.

It is an arithmetic number, because the mean of its divisors is an integer number (622019601).

Almost surely, 2^1244039201 is an apocalyptic number.

It is an amenable number.

1244039201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244039201 is an equidigital number, since it uses as much as digits as its factorization.

1244039201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1244039201 is about 35270.9398939127. The cubic root of 1244039201 is about 1075.5023290700.

The spelling of 1244039201 in words is "one billion, two hundred forty-four million, thirty-nine thousand, two hundred one".