142112143 has 4 divisors (see below), whose sum is σ = 142226280. Its totient is φ = 141998008.

The previous prime is 142112137. The next prime is 142112149. The reversal of 142112143 is 341211241.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (142112137) and next prime (142112149).

It is a cyclic number.

It is not a de Polignac number, because 142112143 - 2⁹ = 142111631 is a prime.

It is a super-2 number, since 2×142112143² = 40391722376104898, which contains 22 as substring.

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 142112143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142112149) 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, 55180 + ... + 57697.

It is an arithmetic number, because the mean of its divisors is an integer number (35556570).

Almost surely, 2^142112143 is an apocalyptic number.

142112143 is a deficient number, since it is larger than the sum of its proper divisors (114137).

142112143 is a wasteful number, since it uses less digits than its factorization.

142112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114136.

The product of its digits is 192, while the sum is 19.

The square root of 142112143 is about 11921.0797749197. The cubic root of 142112143 is about 521.8476469008.

Adding to 142112143 its reverse (341211241), we get a palindrome (483323384).

The spelling of 142112143 in words is "one hundred forty-two million, one hundred twelve thousand, one hundred forty-three".