2123142142 has 32 divisors (see below), whose sum is σ = 3615736320. Its totient is φ = 926160480.

The previous prime is 2123142107. The next prime is 2123142169. The reversal of 2123142142 is 2412413212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96583 + ... + 116509.

It is an arithmetic number, because the mean of its divisors is an integer number (112991760).

Almost surely, 2^2123142142 is an apocalyptic number.

2123142142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123142142 is a deficient number, since it is larger than the sum of its proper divisors (1492594178).

2123142142 is a wasteful number, since it uses less digits than its factorization.

2123142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20136.

The product of its digits is 768, while the sum is 22.

The square root of 2123142142 is about 46077.5665807126. The cubic root of 2123142142 is about 1285.2660134525.

Adding to 2123142142 its reverse (2412413212), we get a palindrome (4535555354).

The spelling of 2123142142 in words is "two billion, one hundred twenty-three million, one hundred forty-two thousand, one hundred forty-two".