40122742123 has 2 divisors, whose sum is σ = 40122742124. Its totient is φ = 40122742122.

The previous prime is 40122742109. The next prime is 40122742139. The reversal of 40122742123 is 32124722104.

40122742123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40122742123 - 2⁵ = 40122742091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40122742091 and 40122742100.

It is not a weakly prime, because it can be changed into another prime (40122742223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061371061 + 20061371062.

It is an arithmetic number, because the mean of its divisors is an integer number (20061371062).

Almost surely, 2^40122742123 is an apocalyptic number.

40122742123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40122742123 is an equidigital number, since it uses as much as digits as its factorization.

40122742123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 40122742123 in words is "forty billion, one hundred twenty-two million, seven hundred forty-two thousand, one hundred twenty-three".