142769789 has 2 divisors, whose sum is σ = 142769790. Its totient is φ = 142769788.

The previous prime is 142769747. The next prime is 142769797. The reversal of 142769789 is 987967241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142324900 + 444889 = 11930^2 + 667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142769789 is a prime.

It is a super-2 number, since 2×142769789² = 40766425302209042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142769789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142769719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71384894 + 71384895.

It is an arithmetic number, because the mean of its divisors is an integer number (71384895).

Almost surely, 2^142769789 is an apocalyptic number.

It is an amenable number.

142769789 is a deficient number, since it is larger than the sum of its proper divisors (1).

142769789 is an equidigital number, since it uses as much as digits as its factorization.

142769789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The square root of 142769789 is about 11948.6312605252. The cubic root of 142769789 is about 522.6513853600.

The spelling of 142769789 in words is "one hundred forty-two million, seven hundred sixty-nine thousand, seven hundred eighty-nine".