142111441 has 8 divisors (see below), whose sum is σ = 144126080. Its totient is φ = 140102352.

The previous prime is 142111439. The next prime is 142111451. The reversal of 142111441 is 144111241.

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

It is a cyclic number.

It is not a de Polignac number, because 142111441 - 2¹ = 142111439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142111451) 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 7 ways as a sum of consecutive naturals, for example, 95086 + ... + 96568.

It is an arithmetic number, because the mean of its divisors is an integer number (18015760).

Almost surely, 2^142111441 is an apocalyptic number.

It is an amenable number.

142111441 is a deficient number, since it is larger than the sum of its proper divisors (2014639).

142111441 is a wasteful number, since it uses less digits than its factorization.

142111441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775.

The product of its digits is 128, while the sum is 19.

The square root of 142111441 is about 11921.0503312418. The cubic root of 142111441 is about 521.8467876319.

Adding to 142111441 its reverse (144111241), we get a palindrome (286222682).

The spelling of 142111441 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred forty-one".