142281449 has 8 divisors (see below), whose sum is σ = 152559360. Its totient is φ = 132215616.

The previous prime is 142281409. The next prime is 142281467. The reversal of 142281449 is 944182241.

It is a happy number.

142281449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142281449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142281409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51629 + ... + 54314.

It is an arithmetic number, because the mean of its divisors is an integer number (19069920).

Almost surely, 2^142281449 is an apocalyptic number.

It is an amenable number.

142281449 is a deficient number, since it is larger than the sum of its proper divisors (10277911).

142281449 is a wasteful number, since it uses less digits than its factorization.

142281449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106039.

The product of its digits is 18432, while the sum is 35.

The square root of 142281449 is about 11928.1787796797. The cubic root of 142281449 is about 522.0547999113.

The spelling of 142281449 in words is "one hundred forty-two million, two hundred eighty-one thousand, four hundred forty-nine".