142825769 has 2 divisors, whose sum is σ = 142825770. Its totient is φ = 142825768.

The previous prime is 142825751. The next prime is 142825799. The reversal of 142825769 is 967528241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140304025 + 2521744 = 11845^2 + 1588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142825769 is a prime.

It is a super-2 number, since 2×142825769² = 40798400580882722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (142825799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71412884 + 71412885.

It is an arithmetic number, because the mean of its divisors is an integer number (71412885).

Almost surely, 2^142825769 is an apocalyptic number.

It is an amenable number.

142825769 is a deficient number, since it is larger than the sum of its proper divisors (1).

142825769 is an equidigital number, since it uses as much as digits as its factorization.

142825769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 142825769 is about 11950.9735586688. The cubic root of 142825769 is about 522.7196869280.

The spelling of 142825769 in words is "one hundred forty-two million, eight hundred twenty-five thousand, seven hundred sixty-nine".