2043123640 has 32 divisors (see below), whose sum is σ = 4598926560. Its totient is φ = 816912000.

The previous prime is 2043123623. The next prime is 2043123701. The reversal of 2043123640 is 463213402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102490 + ... + 120790.

It is an arithmetic number, because the mean of its divisors is an integer number (143716455).

Almost surely, 2^2043123640 is an apocalyptic number.

2043123640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043123640 is an abundant number, since it is smaller than the sum of its proper divisors (2555802920).

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

2043123640 is a wasteful number, since it uses less digits than its factorization.

2043123640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21103 (or 21099 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2043123640 is about 45200.9252117697. The cubic root of 2043123640 is about 1268.9121318362.

The spelling of 2043123640 in words is "two billion, forty-three million, one hundred twenty-three thousand, six hundred forty".