2142718385 has 4 divisors (see below), whose sum is σ = 2571262068. Its totient is φ = 1714174704.

The previous prime is 2142718379. The next prime is 2142718427. The reversal of 2142718385 is 5838172412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 319086769 + 1823631616 = 17863^2 + 42704^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142718385 - 2⁶ = 2142718321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214271834 + ... + 214271843.

It is an arithmetic number, because the mean of its divisors is an integer number (642815517).

Almost surely, 2^2142718385 is an apocalyptic number.

It is an amenable number.

2142718385 is a deficient number, since it is larger than the sum of its proper divisors (428543683).

2142718385 is an equidigital number, since it uses as much as digits as its factorization.

2142718385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428543682.

The product of its digits is 107520, while the sum is 41.

The square root of 2142718385 is about 46289.5062082109. The cubic root of 2142718385 is about 1289.2041612891.

The spelling of 2142718385 in words is "two billion, one hundred forty-two million, seven hundred eighteen thousand, three hundred eighty-five".