142440000509 has 2 divisors, whose sum is σ = 142440000510. Its totient is φ = 142440000508.

The previous prime is 142440000481. The next prime is 142440000529. The reversal of 142440000509 is 905000044241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91413708409 + 51026292100 = 302347^2 + 225890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142440000509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142440000529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71220000254 + 71220000255.

It is an arithmetic number, because the mean of its divisors is an integer number (71220000255).

Almost surely, 2^142440000509 is an apocalyptic number.

It is an amenable number.

142440000509 is a deficient number, since it is larger than the sum of its proper divisors (1).

142440000509 is an equidigital number, since it uses as much as digits as its factorization.

142440000509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 142440000509 in words is "one hundred forty-two billion, four hundred forty million, five hundred nine", and thus it is an aban number.