142607489 has 2 divisors, whose sum is σ = 142607490. Its totient is φ = 142607488.

The previous prime is 142607477. The next prime is 142607503. The reversal of 142607489 is 984706241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108326464 + 34281025 = 10408^2 + 5855^2 .

It is an emirp because it is prime and its reverse (984706241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142607489 - 2²⁴ = 125830273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142607449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71303744 + 71303745.

It is an arithmetic number, because the mean of its divisors is an integer number (71303745).

Almost surely, 2^142607489 is an apocalyptic number.

It is an amenable number.

142607489 is a deficient number, since it is larger than the sum of its proper divisors (1).

142607489 is an equidigital number, since it uses as much as digits as its factorization.

142607489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 142607489 is about 11941.8377563924. The cubic root of 142607489 is about 522.4532610833.

The spelling of 142607489 in words is "one hundred forty-two million, six hundred seven thousand, four hundred eighty-nine".