45428123 has 16 divisors (see below), whose sum is σ = 51861600. Its totient is φ = 39486720.

The previous prime is 45428111. The next prime is 45428129. The reversal of 45428123 is 32182454.

It is a happy number.

It is not a de Polignac number, because 45428123 - 2¹⁶ = 45362587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45428129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13988 + ... + 16926.

It is an arithmetic number, because the mean of its divisors is an integer number (3241350).

Almost surely, 2^45428123 is an apocalyptic number.

45428123 is a deficient number, since it is larger than the sum of its proper divisors (6433477).

45428123 is a wasteful number, since it uses less digits than its factorization.

45428123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022.

The product of its digits is 7680, while the sum is 29.

The square root of 45428123 is about 6740.0387981079. The cubic root of 45428123 is about 356.8137630469.

The spelling of 45428123 in words is "forty-five million, four hundred twenty-eight thousand, one hundred twenty-three".