142144449 has 8 divisors (see below), whose sum is σ = 190361760. Its totient is φ = 94345056.

The previous prime is 142144447. The next prime is 142144459. The reversal of 142144449 is 944441241.

It is a happy number.

142144449 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 not a de Polignac number, because 142144449 - 2¹ = 142144447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142144441) 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, 103684 + ... + 105045.

It is an arithmetic number, because the mean of its divisors is an integer number (23795220).

Almost surely, 2^142144449 is an apocalyptic number.

It is an amenable number.

142144449 is a deficient number, since it is larger than the sum of its proper divisors (48217311).

142144449 is a wasteful number, since it uses less digits than its factorization.

142144449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208959.

The product of its digits is 18432, while the sum is 33.

The square root of 142144449 is about 11922.4346926289. The cubic root of 142144449 is about 521.8871873473.

The spelling of 142144449 in words is "one hundred forty-two million, one hundred forty-four thousand, four hundred forty-nine".