12103423040 has 56 divisors (see below), whose sum is σ = 29524266072. Its totient is φ = 4723281920.

The previous prime is 12103423039. The next prime is 12103423061. The reversal of 12103423040 is 4032430121.

It can be written as a sum of positive squares in 4 ways, for example, as 596141056 + 11507281984 = 24416^2 + 107272^2 .

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 7 ways as a sum of consecutive naturals, for example, 448139 + ... + 474378.

It is an arithmetic number, because the mean of its divisors is an integer number (527219037).

Almost surely, 2^12103423040 is an apocalyptic number.

12103423040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103423040 is an abundant number, since it is smaller than the sum of its proper divisors (17420843032).

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

12103423040 is an equidigital number, since it uses as much as digits as its factorization.

12103423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922575 (or 922565 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12103423040 its reverse (4032430121), we get a palindrome (16135853161).

The spelling of 12103423040 in words is "twelve billion, one hundred three million, four hundred twenty-three thousand, forty".