142753889 has 4 divisors (see below), whose sum is σ = 143269524. Its totient is φ = 142238256.

The previous prime is 142753873. The next prime is 142753907. The reversal of 142753889 is 988357241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32398864 + 110355025 = 5692^2 + 10505^2 .

It is a cyclic number.

It is not a de Polignac number, because 142753889 - 2⁴ = 142753873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142753829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257402 + ... + 257955.

It is an arithmetic number, because the mean of its divisors is an integer number (35817381).

Almost surely, 2^142753889 is an apocalyptic number.

It is an amenable number.

142753889 is a deficient number, since it is larger than the sum of its proper divisors (515635).

142753889 is an equidigital number, since it uses as much as digits as its factorization.

142753889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515634.

The product of its digits is 483840, while the sum is 47.

The square root of 142753889 is about 11947.9658938248. The cubic root of 142753889 is about 522.6319824093.

The spelling of 142753889 in words is "one hundred forty-two million, seven hundred fifty-three thousand, eight hundred eighty-nine".