142144111 has 12 divisors (see below), whose sum is σ = 153524712. Its totient is φ = 131516784.

The previous prime is 142144103. The next prime is 142144127. The reversal of 142144111 is 111441241.

It is not a de Polignac number, because 142144111 - 2³ = 142144103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142144141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10945 + ... + 20101.

It is an arithmetic number, because the mean of its divisors is an integer number (12793726).

Almost surely, 2^142144111 is an apocalyptic number.

142144111 is a deficient number, since it is larger than the sum of its proper divisors (11380601).

142144111 is an equidigital number, since it uses as much as digits as its factorization.

142144111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238 (or 9219 counting only the distinct ones).

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

The square root of 142144111 is about 11922.4205176633. The cubic root of 142144111 is about 521.8867736883.

Adding to 142144111 its reverse (111441241), we get a palindrome (253585352).

The spelling of 142144111 in words is "one hundred forty-two million, one hundred forty-four thousand, one hundred eleven".