1244424320401 has 4 divisors (see below), whose sum is σ = 1244466701632. Its totient is φ = 1244381939172.

The previous prime is 1244424320393. The next prime is 1244424320411. The reversal of 1244424320401 is 1040234244421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1244424320401 - 2³ = 1244424320393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244424320411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21146541 + ... + 21205306.

It is an arithmetic number, because the mean of its divisors is an integer number (311116675408).

Almost surely, 2^{1244424320401} is an apocalyptic number.

It is an amenable number.

1244424320401 is a deficient number, since it is larger than the sum of its proper divisors (42381231).

1244424320401 is an equidigital number, since it uses as much as digits as its factorization.

1244424320401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42381230.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 1244424320401 its reverse (1040234244421), we get a palindrome (2284658564822).

The spelling of 1244424320401 in words is "one trillion, two hundred forty-four billion, four hundred twenty-four million, three hundred twenty thousand, four hundred one".