2140423400 has 48 divisors (see below), whose sum is σ = 5020577100. Its totient is φ = 848583680.

The previous prime is 2140423357. The next prime is 2140423421. The reversal of 2140423400 is 43240412.

It can be written as a sum of positive squares in 6 ways, for example, as 278155684 + 1862267716 = 16678^2 + 43154^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24755 + ... + 69954.

Almost surely, 2^2140423400 is an apocalyptic number.

2140423400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140423400 is an abundant number, since it is smaller than the sum of its proper divisors (2880153700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2140423400 is a wasteful number, since it uses less digits than its factorization.

2140423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94838 (or 94829 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2140423400 is about 46264.7100931152. The cubic root of 2140423400 is about 1288.7437241826.

Adding to 2140423400 its reverse (43240412), we get a palindrome (2183663812).

The spelling of 2140423400 in words is "two billion, one hundred forty million, four hundred twenty-three thousand, four hundred".