2140165423 has 4 divisors (see below), whose sum is σ = 2334725928. Its totient is φ = 1945604920.

The previous prime is 2140165373. The next prime is 2140165429. The reversal of 2140165423 is 3245610412.

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

It is a cyclic number.

It is not a de Polignac number, because 2140165423 - 2¹³ = 2140157231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140165391 and 2140165400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140165429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97280236 + ... + 97280257.

It is an arithmetic number, because the mean of its divisors is an integer number (583681482).

Almost surely, 2^2140165423 is an apocalyptic number.

2140165423 is a deficient number, since it is larger than the sum of its proper divisors (194560505).

2140165423 is a wasteful number, since it uses less digits than its factorization.

2140165423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194560504.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2140165423 is about 46261.9219553187. The cubic root of 2140165423 is about 1288.6919463275.

Adding to 2140165423 its reverse (3245610412), we get a palindrome (5385775835).

The spelling of 2140165423 in words is "two billion, one hundred forty million, one hundred sixty-five thousand, four hundred twenty-three".