40244420123 has 4 divisors (see below), whose sum is σ = 40244980200. Its totient is φ = 40243860048.

The previous prime is 40244420119. The next prime is 40244420141. The reversal of 40244420123 is 32102444204.

It is a happy number.

40244420123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40244420123 - 2² = 40244420119 is a prime.

It is a super-2 number, since 2×40244420123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40244420092 and 40244420101.

It is not an unprimeable number, because it can be changed into a prime (40244420423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153065 + ... + 322362.

It is an arithmetic number, because the mean of its divisors is an integer number (10061245050).

Almost surely, 2^40244420123 is an apocalyptic number.

40244420123 is a deficient number, since it is larger than the sum of its proper divisors (560077).

40244420123 is an equidigital number, since it uses as much as digits as its factorization.

40244420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560076.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 40244420123 its reverse (32102444204), we get a palindrome (72346864327).

The spelling of 40244420123 in words is "forty billion, two hundred forty-four million, four hundred twenty thousand, one hundred twenty-three".