123124545 has 24 divisors (see below), whose sum is σ = 213745896. Its totient is φ = 65564928.

The previous prime is 123124531. The next prime is 123124553. The reversal of 123124545 is 545421321.

It can be written as a sum of positive squares in 4 ways, for example, as 6290064 + 116834481 = 2508^2 + 10809^2 .

It is not a de Polignac number, because 123124545 - 2⁵ = 123124513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34149 + ... + 37581.

It is an arithmetic number, because the mean of its divisors is an integer number (8906079).

Almost surely, 2^123124545 is an apocalyptic number.

123124545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123124545 is a deficient number, since it is larger than the sum of its proper divisors (90621351).

123124545 is a wasteful number, since it uses less digits than its factorization.

123124545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241 (or 4238 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 123124545 is about 11096.1500079983. The cubic root of 123124545 is about 497.4867819691.

Adding to 123124545 its reverse (545421321), we get a palindrome (668545866).

The spelling of 123124545 in words is "one hundred twenty-three million, one hundred twenty-four thousand, five hundred forty-five".