142265509 has 2 divisors, whose sum is σ = 142265510. Its totient is φ = 142265508.

The previous prime is 142265447. The next prime is 142265533. The reversal of 142265509 is 905562241.

It is a happy number.

142265509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122213025 + 20052484 = 11055^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 142265509 - 2¹⁹ = 141741221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142265209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71132754 + 71132755.

It is an arithmetic number, because the mean of its divisors is an integer number (71132755).

Almost surely, 2^142265509 is an apocalyptic number.

It is an amenable number.

142265509 is a deficient number, since it is larger than the sum of its proper divisors (1).

142265509 is an equidigital number, since it uses as much as digits as its factorization.

142265509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 142265509 is about 11927.5105952583. The cubic root of 142265509 is about 522.0353036609.

The spelling of 142265509 in words is "one hundred forty-two million, two hundred sixty-five thousand, five hundred nine".