40042331212123 has 8 divisors (see below), whose sum is σ = 40057219704320. Its totient is φ = 40027444344360.

The previous prime is 40042331212067. The next prime is 40042331212139. The reversal of 40042331212123 is 32121213324004.

40042331212123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40042331212123 - 2²¹ = 40042329114971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40042331212091 and 40042331212100.

It is not an unprimeable number, because it can be changed into a prime (40042332212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50064958 + ... + 50858476.

It is an arithmetic number, because the mean of its divisors is an integer number (5007152463040).

Almost surely, 2^{40042331212123} is an apocalyptic number.

40042331212123 is a deficient number, since it is larger than the sum of its proper divisors (14888492197).

40042331212123 is a wasteful number, since it uses less digits than its factorization.

40042331212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812217.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 40042331212123 its reverse (32121213324004), we get a palindrome (72163544536127).

The spelling of 40042331212123 in words is "forty trillion, forty-two billion, three hundred thirty-one million, two hundred twelve thousand, one hundred twenty-three".