123140245 has 8 divisors (see below), whose sum is σ = 148156416. Its totient is φ = 98253456.

The previous prime is 123140221. The next prime is 123140279. The reversal of 123140245 is 542041321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123140245 - 2⁷ = 123140117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30237 + ... + 34066.

It is an arithmetic number, because the mean of its divisors is an integer number (18519552).

Almost surely, 2^123140245 is an apocalyptic number.

It is an amenable number.

123140245 is a deficient number, since it is larger than the sum of its proper divisors (25016171).

123140245 is an equidigital number, since it uses as much as digits as its factorization.

123140245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64691.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 123140245 is about 11096.8574380317. The cubic root of 123140245 is about 497.5079264412.

Adding to 123140245 its reverse (542041321), we get a palindrome (665181566).

The spelling of 123140245 in words is "one hundred twenty-three million, one hundred forty thousand, two hundred forty-five".