2143715842 has 16 divisors (see below), whose sum is σ = 3314265912. Its totient is φ = 1039167360.

The previous prime is 2143715839. The next prime is 2143715843. The reversal of 2143715842 is 2485173412.

It can be written as a sum of positive squares in 4 ways, for example, as 2132500041 + 11215801 = 46179^2 + 3349^2 .

It is a super-2 number, since 2×2143715842² = 9191035222483537928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (2143715843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30753 + ... + 72340.

Almost surely, 2^2143715842 is an apocalyptic number.

2143715842 is a deficient number, since it is larger than the sum of its proper divisors (1170550070).

2143715842 is a wasteful number, since it uses less digits than its factorization.

2143715842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103413.

The product of its digits is 53760, while the sum is 37.

The square root of 2143715842 is about 46300.2790704333. The cubic root of 2143715842 is about 1289.4041760988.

The spelling of 2143715842 in words is "two billion, one hundred forty-three million, seven hundred fifteen thousand, eight hundred forty-two".