2140023400 has 48 divisors (see below), whose sum is σ = 5069457900. Its totient is φ = 839854080.

The previous prime is 2140023367. The next prime is 2140023407. The reversal of 2140023400 is 43200412.

It can be written as a sum of positive squares in 6 ways, for example, as 1271778244 + 868245156 = 35662^2 + 29466^2 .

It is not an unprimeable number, because it can be changed into a prime (2140023407) 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 11 ways as a sum of consecutive naturals, for example, 90345 + ... + 111544.

Almost surely, 2^2140023400 is an apocalyptic number.

2140023400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140023400 is an abundant number, since it is smaller than the sum of its proper divisors (2929434500).

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

2140023400 is a wasteful number, since it uses less digits than its factorization.

2140023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201958 (or 201949 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2140023400 is about 46260.3869417453. The cubic root of 2140023400 is about 1288.6634395054.

Adding to 2140023400 its reverse (43200412), we get a palindrome (2183223812).

The spelling of 2140023400 in words is "two billion, one hundred forty million, twenty-three thousand, four hundred".