142220143 has 8 divisors (see below), whose sum is σ = 153746208. Its totient is φ = 130777824.

The previous prime is 142220137. The next prime is 142220153. The reversal of 142220143 is 341022241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142220143 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 142220143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142220153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17380 + ... + 24217.

It is an arithmetic number, because the mean of its divisors is an integer number (19218276).

Almost surely, 2^142220143 is an apocalyptic number.

142220143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142220143 is a deficient number, since it is larger than the sum of its proper divisors (11526065).

142220143 is a wasteful number, since it uses less digits than its factorization.

142220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41873.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142220143 is about 11925.6087056385. The cubic root of 142220143 is about 521.9798084310.

Adding to 142220143 its reverse (341022241), we get a palindrome (483242384).

The spelling of 142220143 in words is "one hundred forty-two million, two hundred twenty thousand, one hundred forty-three".