142489525 has 12 divisors (see below), whose sum is σ = 177465700. Its totient is φ = 113489280.

The previous prime is 142489517. The next prime is 142489537. The reversal of 142489525 is 525984241.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8254129 + 134235396 = 2873^2 + 11586^2 .

It is not a de Polignac number, because 142489525 - 2³ = 142489517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6720 + ... + 18169.

Almost surely, 2^142489525 is an apocalyptic number.

It is an amenable number.

142489525 is a deficient number, since it is larger than the sum of its proper divisors (34976175).

142489525 is a wasteful number, since it uses less digits than its factorization.

142489525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25128 (or 25123 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 142489525 is about 11936.8976287811. The cubic root of 142489525 is about 522.3091646822.

The spelling of 142489525 in words is "one hundred forty-two million, four hundred eighty-nine thousand, five hundred twenty-five".