123038545 has 16 divisors (see below), whose sum is σ = 169820928. Its totient is φ = 83828160.

The previous prime is 123038519. The next prime is 123038549. The reversal of 123038545 is 545830321.

It is not a de Polignac number, because 123038545 - 2⁹ = 123038033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123038549) 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, 5701 + ... + 16690.

It is an arithmetic number, because the mean of its divisors is an integer number (10613808).

Almost surely, 2^123038545 is an apocalyptic number.

It is an amenable number.

123038545 is a deficient number, since it is larger than the sum of its proper divisors (46782383).

123038545 is a wasteful number, since it uses less digits than its factorization.

123038545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22560.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 123038545 is about 11092.2741130933. The cubic root of 123038545 is about 497.3709268450.

Adding to 123038545 its reverse (545830321), we get a palindrome (668868866).

The spelling of 123038545 in words is "one hundred twenty-three million, thirty-eight thousand, five hundred forty-five".