1440123137 has 2 divisors, whose sum is σ = 1440123138. Its totient is φ = 1440123136.

The previous prime is 1440123133. The next prime is 1440123161. The reversal of 1440123137 is 7313210441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304726641 + 135396496 = 36121^2 + 11636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440123137 - 2² = 1440123133 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440123133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720061568 + 720061569.

It is an arithmetic number, because the mean of its divisors is an integer number (720061569).

Almost surely, 2^1440123137 is an apocalyptic number.

It is an amenable number.

1440123137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440123137 is an equidigital number, since it uses as much as digits as its factorization.

1440123137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1440123137 is about 37948.9543597712. The cubic root of 1440123137 is about 1129.2754216158.

Adding to 1440123137 its reverse (7313210441), we get a palindrome (8753333578).

The spelling of 1440123137 in words is "one billion, four hundred forty million, one hundred twenty-three thousand, one hundred thirty-seven".