142002143 has 4 divisors (see below), whose sum is σ = 149475960. Its totient is φ = 134528328.

The previous prime is 142002121. The next prime is 142002151. The reversal of 142002143 is 341200241.

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

It is a cyclic number.

It is not a de Polignac number, because 142002143 - 2⁶ = 142002079 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 (142002193) 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, 3736880 + ... + 3736917.

It is an arithmetic number, because the mean of its divisors is an integer number (37368990).

Almost surely, 2^142002143 is an apocalyptic number.

142002143 is a deficient number, since it is larger than the sum of its proper divisors (7473817).

142002143 is an equidigital number, since it uses as much as digits as its factorization.

142002143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473816.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142002143 is about 11916.4652057563. The cubic root of 142002143 is about 521.7129690869.

Adding to 142002143 its reverse (341200241), we get a palindrome (483202384).

The spelling of 142002143 in words is "one hundred forty-two million, two thousand, one hundred forty-three".