123606545 has 16 divisors (see below), whose sum is σ = 150355920. Its totient is φ = 97542144.

The previous prime is 123606521. The next prime is 123606551. The reversal of 123606545 is 545606321.

It can be written as a sum of positive squares in 8 ways, for example, as 3857296 + 119749249 = 1964^2 + 10943^2 .

It is a cyclic number.

It is not a de Polignac number, because 123606545 - 2⁸ = 123606289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183329 + ... + 184001.

It is an arithmetic number, because the mean of its divisors is an integer number (9397245).

Almost surely, 2^123606545 is an apocalyptic number.

It is an amenable number.

123606545 is a deficient number, since it is larger than the sum of its proper divisors (26749375).

123606545 is a wasteful number, since it uses less digits than its factorization.

123606545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 123606545 is about 11117.8480381772. The cubic root of 123606545 is about 498.1351130409.

The spelling of 123606545 in words is "one hundred twenty-three million, six hundred six thousand, five hundred forty-five".