2138127142 has 4 divisors (see below), whose sum is σ = 3207190716. Its totient is φ = 1069063570.

The previous prime is 2138127139. The next prime is 2138127151. The reversal of 2138127142 is 2417218312.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534531784 + ... + 534531787.

It is an arithmetic number, because the mean of its divisors is an integer number (801797679).

Almost surely, 2^2138127142 is an apocalyptic number.

2138127142 is a deficient number, since it is larger than the sum of its proper divisors (1069063574).

2138127142 is a wasteful number, since it uses less digits than its factorization.

2138127142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069063573.

The product of its digits is 5376, while the sum is 31.

The square root of 2138127142 is about 46239.8869159517. The cubic root of 2138127142 is about 1288.2827021616.

The spelling of 2138127142 in words is "two billion, one hundred thirty-eight million, one hundred twenty-seven thousand, one hundred forty-two".