123005245 has 16 divisors (see below), whose sum is σ = 161429760. Its totient is φ = 89233600.

The previous prime is 123005243. The next prime is 123005287. The reversal of 123005245 is 542500321.

It is not a de Polignac number, because 123005245 - 2¹ = 123005243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123005243) 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, 21111 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (10089360).

Almost surely, 2^123005245 is an apocalyptic number.

It is an amenable number.

123005245 is a deficient number, since it is larger than the sum of its proper divisors (38424515).

123005245 is a wasteful number, since it uses less digits than its factorization.

123005245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 123005245 is about 11090.7729667503. The cubic root of 123005245 is about 497.3260521642.

Adding to 123005245 its reverse (542500321), we get a palindrome (665505566).

The spelling of 123005245 in words is "one hundred twenty-three million, five thousand, two hundred forty-five".