142441111 has 4 divisors (see below), whose sum is σ = 142592472. Its totient is φ = 142289752.

The previous prime is 142441109. The next prime is 142441171. The reversal of 142441111 is 111144241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111144241 = 13 ⋅8549557.

It is a cyclic number.

It is not a de Polignac number, because 142441111 - 2¹ = 142441109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142441171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74260 + ... + 76153.

It is an arithmetic number, because the mean of its divisors is an integer number (35648118).

Almost surely, 2^142441111 is an apocalyptic number.

142441111 is a deficient number, since it is larger than the sum of its proper divisors (151361).

142441111 is an equidigital number, since it uses as much as digits as its factorization.

142441111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151360.

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

The square root of 142441111 is about 11934.8695426469. The cubic root of 142441111 is about 522.2500025780.

Adding to 142441111 its reverse (111144241), we get a palindrome (253585352).

The spelling of 142441111 in words is "one hundred forty-two million, four hundred forty-one thousand, one hundred eleven".