142444241 has 4 divisors (see below), whose sum is σ = 150823332. Its totient is φ = 134065152.

The previous prime is 142444213. The next prime is 142444249.

142444241 is nontrivially palindromic in base 10.

142444241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 110859841 + 31584400 = 10529^2 + 5620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142444241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142444241.

It is not an unprimeable number, because it can be changed into a prime (142444249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4189520 + ... + 4189553.

It is an arithmetic number, because the mean of its divisors is an integer number (37705833).

Almost surely, 2^142444241 is an apocalyptic number.

It is an amenable number.

142444241 is a deficient number, since it is larger than the sum of its proper divisors (8379091).

142444241 is an equidigital number, since it uses as much as digits as its factorization.

142444241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8379090.

The product of its digits is 4096, while the sum is 26.

The square root of 142444241 is about 11935.0006702974. Note that the first 3 decimals coincide. The cubic root of 142444241 is about 522.2538278559.

The spelling of 142444241 in words is "one hundred forty-two million, four hundred forty-four thousand, two hundred forty-one".