142774589 has 2 divisors, whose sum is σ = 142774590. Its totient is φ = 142774588.

The previous prime is 142774559. The next prime is 142774603. The reversal of 142774589 is 985477241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83868964 + 58905625 = 9158^2 + 7675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142774589 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142774519) 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, 71387294 + 71387295.

It is an arithmetic number, because the mean of its divisors is an integer number (71387295).

Almost surely, 2^142774589 is an apocalyptic number.

It is an amenable number.

142774589 is a deficient number, since it is larger than the sum of its proper divisors (1).

142774589 is an equidigital number, since it uses as much as digits as its factorization.

142774589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 47.

The square root of 142774589 is about 11948.8321186633. The cubic root of 142774589 is about 522.6572425715.

The spelling of 142774589 in words is "one hundred forty-two million, seven hundred seventy-four thousand, five hundred eighty-nine".