40004304123 has 16 divisors (see below), whose sum is σ = 62109110016. Its totient is φ = 22428288480.

The previous prime is 40004304121. The next prime is 40004304139. The reversal of 40004304123 is 32140340004.

It is not a de Polignac number, because 40004304123 - 2¹ = 40004304121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 40004304123.

It is not an unprimeable number, because it can be changed into a prime (40004304121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17970273 + ... + 17972498.

It is an arithmetic number, because the mean of its divisors is an integer number (3881819376).

Almost surely, 2^40004304123 is an apocalyptic number.

40004304123 is a deficient number, since it is larger than the sum of its proper divisors (22104805893).

40004304123 is a wasteful number, since it uses less digits than its factorization.

40004304123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35942834.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 40004304123 its reverse (32140340004), we get a palindrome (72144644127).

The spelling of 40004304123 in words is "forty billion, four million, three hundred four thousand, one hundred twenty-three".