1440140137 has 2 divisors, whose sum is σ = 1440140138. Its totient is φ = 1440140136.

The previous prime is 1440140099. The next prime is 1440140153. The reversal of 1440140137 is 7310410441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1418200281 + 21939856 = 37659^2 + 4684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440140137 is a prime.

It is a super-2 number, since 2×1440140137² = 4148007228396757538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1440140197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720070068 + 720070069.

It is an arithmetic number, because the mean of its divisors is an integer number (720070069).

Almost surely, 2^1440140137 is an apocalyptic number.

It is an amenable number.

1440140137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440140137 is an equidigital number, since it uses as much as digits as its factorization.

1440140137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1440140137 is about 37949.1783442013. The cubic root of 1440140137 is about 1129.2798651262.

Adding to 1440140137 its reverse (7310410441), we get a palindrome (8750550578).

It can be divided in two parts, 1440140 and 137, that multiplied together give a triangular number (197299180 = T₁₉₈₆₄).

The spelling of 1440140137 in words is "one billion, four hundred forty million, one hundred forty thousand, one hundred thirty-seven".