1244140401 has 8 divisors (see below), whose sum is σ = 1895833024. Its totient is φ = 710937360.

The previous prime is 1244140379. The next prime is 1244140421. The reversal of 1244140401 is 1040414421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1244140401 - 2¹⁴ = 1244124017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 59244781 = 1244140401 / (1 + 2 + 4 + 4 + 1 + 4 + 0 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244140421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29622370 + ... + 29622411.

It is an arithmetic number, because the mean of its divisors is an integer number (236979128).

Almost surely, 2^1244140401 is an apocalyptic number.

It is an amenable number.

1244140401 is a deficient number, since it is larger than the sum of its proper divisors (651692623).

1244140401 is an equidigital number, since it uses as much as digits as its factorization.

1244140401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59244791.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1244140401 is about 35272.3744735168. The cubic root of 1244140401 is about 1075.5314915713.

Adding to 1244140401 its reverse (1040414421), we get a palindrome (2284554822).

The spelling of 1244140401 in words is "one billion, two hundred forty-four million, one hundred forty thousand, four hundred one".