2140561423 has 24 divisors (see below), whose sum is σ = 2925372240. Its totient is φ = 1539659520.

The previous prime is 2140561421. The next prime is 2140561459. The reversal of 2140561423 is 3241650412.

It is not a de Polignac number, because 2140561423 - 2¹ = 2140561421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2140561391 and 2140561400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140561421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145738 + ... + 159751.

It is an arithmetic number, because the mean of its divisors is an integer number (121890510).

Almost surely, 2^2140561423 is an apocalyptic number.

2140561423 is a deficient number, since it is larger than the sum of its proper divisors (784810817).

2140561423 is a wasteful number, since it uses less digits than its factorization.

2140561423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305527 (or 305520 counting only the distinct ones).

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

The square root of 2140561423 is about 46266.2017351760. The cubic root of 2140561423 is about 1288.7714246914.

It can be divided in two parts, 21405 and 61423, that added together give a palindrome (82828).

The spelling of 2140561423 in words is "two billion, one hundred forty million, five hundred sixty-one thousand, four hundred twenty-three".