45105123 has 8 divisors (see below), whose sum is σ = 68731648. Its totient is φ = 25774344.

The previous prime is 45105103. The next prime is 45105143. The reversal of 45105123 is 32150154.

It is an interprime number because it is at equal distance from previous prime (45105103) and next prime (45105143).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45105123 - 2⁹ = 45104611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2147863 = 45105123 / (4 + 5 + 1 + 0 + 5 + 1 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45105123.

It is not an unprimeable number, because it can be changed into a prime (45105103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073911 + ... + 1073952.

It is an arithmetic number, because the mean of its divisors is an integer number (8591456).

Almost surely, 2^45105123 is an apocalyptic number.

45105123 is a deficient number, since it is larger than the sum of its proper divisors (23626525).

45105123 is a wasteful number, since it uses less digits than its factorization.

45105123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147873.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 45105123 is about 6716.0347676289. The cubic root of 45105123 is about 355.9660863835.

Adding to 45105123 its reverse (32150154), we get a palindrome (77255277).

The spelling of 45105123 in words is "forty-five million, one hundred five thousand, one hundred twenty-three".