45442123 has 2 divisors, whose sum is σ = 45442124. Its totient is φ = 45442122.

The previous prime is 45442109. The next prime is 45442157. The reversal of 45442123 is 32124454.

It is a happy number.

45442123 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 45442123 - 2¹³ = 45433931 is a prime.

It is not a weakly prime, because it can be changed into another prime (45442723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22721061 + 22721062.

It is an arithmetic number, because the mean of its divisors is an integer number (22721062).

Almost surely, 2^45442123 is an apocalyptic number.

45442123 is a deficient number, since it is larger than the sum of its proper divisors (1).

45442123 is an equidigital number, since it uses as much as digits as its factorization.

45442123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 25.

The square root of 45442123 is about 6741.0772877931. The cubic root of 45442123 is about 356.8504134687.

Adding to 45442123 its reverse (32124454), we get a palindrome (77566577).

The spelling of 45442123 in words is "forty-five million, four hundred forty-two thousand, one hundred twenty-three".