142396489 has 3 divisors (see below), whose sum is σ = 142408423. Its totient is φ = 142384556.

The previous prime is 142396487. The next prime is 142396517. The reversal of 142396489 is 984693241.

The square root of 142396489 is 11933.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 120231225 + 22165264 = 10965^2 + 4708^2 .

It is not a de Polignac number, because 142396489 - 2¹ = 142396487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142396481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5967 + ... + 17899.

Almost surely, 2^142396489 is an apocalyptic number.

142396489 is the 11933-rd square number.

142396489 is the 5967-th centered octagonal number.

It is an amenable number.

142396489 is a deficient number, since it is larger than the sum of its proper divisors (11934).

142396489 is an frugal number, since it uses more digits than its factorization.

142396489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23866 (or 11933 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The cubic root of 142396489 is about 522.1954624401.

The spelling of 142396489 in words is "one hundred forty-two million, three hundred ninety-six thousand, four hundred eighty-nine".