1244245141 has 4 divisors (see below), whose sum is σ = 1262816032. Its totient is φ = 1225674252.

The previous prime is 1244245127. The next prime is 1244245151. The reversal of 1244245141 is 1415424421.

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 1244245141 - 2⁹ = 1244244629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244245151) 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, 9285345 + ... + 9285478.

It is an arithmetic number, because the mean of its divisors is an integer number (315704008).

Almost surely, 2^1244245141 is an apocalyptic number.

It is an amenable number.

1244245141 is a deficient number, since it is larger than the sum of its proper divisors (18570891).

1244245141 is an equidigital number, since it uses as much as digits as its factorization.

1244245141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18570890.

The product of its digits is 5120, while the sum is 28.

The square root of 1244245141 is about 35273.8591736147. The cubic root of 1244245141 is about 1075.5616725185.

Adding to 1244245141 its reverse (1415424421), we get a palindrome (2659669562).

The spelling of 1244245141 in words is "one billion, two hundred forty-four million, two hundred forty-five thousand, one hundred forty-one".