142628089 has 2 divisors, whose sum is σ = 142628090. Its totient is φ = 142628088.

The previous prime is 142628077. The next prime is 142628099. The reversal of 142628089 is 980826241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112466025 + 30162064 = 10605^2 + 5492^2 .

It is an emirp because it is prime and its reverse (980826241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142628089 - 2¹¹ = 142626041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142628099) 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, 71314044 + 71314045.

It is an arithmetic number, because the mean of its divisors is an integer number (71314045).

Almost surely, 2^142628089 is an apocalyptic number.

It is an amenable number.

142628089 is a deficient number, since it is larger than the sum of its proper divisors (1).

142628089 is an equidigital number, since it uses as much as digits as its factorization.

142628089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 142628089 is about 11942.7002390582. The cubic root of 142628089 is about 522.4784164218.

The spelling of 142628089 in words is "one hundred forty-two million, six hundred twenty-eight thousand, eighty-nine".