40244120123 has 2 divisors, whose sum is σ = 40244120124. Its totient is φ = 40244120122.

The previous prime is 40244120089. The next prime is 40244120159. The reversal of 40244120123 is 32102144204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40244120123 is a prime.

It is not a weakly prime, because it can be changed into another prime (40244120183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122060061 + 20122060062.

It is an arithmetic number, because the mean of its divisors is an integer number (20122060062).

Almost surely, 2^40244120123 is an apocalyptic number.

40244120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244120123 is an equidigital number, since it uses as much as digits as its factorization.

40244120123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 40244120123 its reverse (32102144204), we get a palindrome (72346264327).

The spelling of 40244120123 in words is "forty billion, two hundred forty-four million, one hundred twenty thousand, one hundred twenty-three".