123810045 has 16 divisors (see below), whose sum is σ = 199245312. Its totient is φ = 65648960.

The previous prime is 123810041. The next prime is 123810091. The reversal of 123810045 is 540018321.

It is not a de Polignac number, because 123810045 - 2² = 123810041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123809997 and 123810024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123810041) 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, 21261 + ... + 26450.

It is an arithmetic number, because the mean of its divisors is an integer number (12452832).

Almost surely, 2^123810045 is an apocalyptic number.

123810045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123810045 is a deficient number, since it is larger than the sum of its proper divisors (75435267).

123810045 is a wasteful number, since it uses less digits than its factorization.

123810045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47892.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 123810045 is about 11126.9962253970. The cubic root of 123810045 is about 498.4083318951.

Adding to 123810045 its reverse (540018321), we get a palindrome (663828366).

The spelling of 123810045 in words is "one hundred twenty-three million, eight hundred ten thousand, forty-five".