123706245 has 64 divisors (see below), whose sum is σ = 226840320. Its totient is φ = 57065472.

The previous prime is 123706241. The next prime is 123706267. The reversal of 123706245 is 542607321.

It is not a de Polignac number, because 123706245 - 2² = 123706241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123706241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 640869 + ... + 641061.

It is an arithmetic number, because the mean of its divisors is an integer number (3544380).

Almost surely, 2^123706245 is an apocalyptic number.

123706245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123706245 is a deficient number, since it is larger than the sum of its proper divisors (103134075).

123706245 is a wasteful number, since it uses less digits than its factorization.

123706245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 123706245 is about 11122.3309157748. The cubic root of 123706245 is about 498.2690075793.

The spelling of 123706245 in words is "one hundred twenty-three million, seven hundred six thousand, two hundred forty-five".