142769089 has 2 divisors, whose sum is σ = 142769090. Its totient is φ = 142769088.

The previous prime is 142769087. The next prime is 142769113. The reversal of 142769089 is 980967241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87890625 + 54878464 = 9375^2 + 7408^2 .

It is a cyclic number.

It is not a de Polignac number, because 142769089 - 2¹ = 142769087 is a prime.

Together with 142769087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (142769087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71384544 + 71384545.

It is an arithmetic number, because the mean of its divisors is an integer number (71384545).

Almost surely, 2^142769089 is an apocalyptic number.

It is an amenable number.

142769089 is a deficient number, since it is larger than the sum of its proper divisors (1).

142769089 is an equidigital number, since it uses as much as digits as its factorization.

142769089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 142769089 is about 11948.6019684313. The cubic root of 142769089 is about 522.6505311723.

The spelling of 142769089 in words is "one hundred forty-two million, seven hundred sixty-nine thousand, eighty-nine".