2143142 has 4 divisors (see below), whose sum is σ = 3214716. Its totient is φ = 1071570.

The previous prime is 2143109. The next prime is 2143147. The reversal of 2143142 is 2413412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2143142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535784 + ... + 535787.

It is an arithmetic number, because the mean of its divisors is an integer number (803679).

2^2143142 is an apocalyptic number.

2143142 is a deficient number, since it is larger than the sum of its proper divisors (1071574).

2143142 is a wasteful number, since it uses less digits than its factorization.

2143142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071573.

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

The square root of 2143142 is about 1463.9474034268. The cubic root of 2143142 is about 128.9289114160.

Adding to 2143142 its reverse (2413412), we get a palindrome (4556554).

The spelling of 2143142 in words is "two million, one hundred forty-three thousand, one hundred forty-two".