1444121141 has 2 divisors, whose sum is σ = 1444121142. Its totient is φ = 1444121140.

The previous prime is 1444121131. The next prime is 1444121177. The reversal of 1444121141 is 1411214441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1434818641 + 9302500 = 37879^2 + 3050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444121141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444121131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722060570 + 722060571.

It is an arithmetic number, because the mean of its divisors is an integer number (722060571).

Almost surely, 2^1444121141 is an apocalyptic number.

It is an amenable number.

1444121141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444121141 is an equidigital number, since it uses as much as digits as its factorization.

1444121141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 23.

The square root of 1444121141 is about 38001.5939270973. The cubic root of 1444121141 is about 1130.3194703265.

Adding to 1444121141 its reverse (1411214441), we get a palindrome (2855335582).

The spelling of 1444121141 in words is "one billion, four hundred forty-four million, one hundred twenty-one thousand, one hundred forty-one".