123140235 has 64 divisors (see below), whose sum is σ = 219801600. Its totient is φ = 58609152.

The previous prime is 123140221. The next prime is 123140279. The reversal of 123140235 is 532041321.

It is not a de Polignac number, because 123140235 - 2⁴ = 123140219 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 388297 + ... + 388613.

It is an arithmetic number, because the mean of its divisors is an integer number (3434400).

Almost surely, 2^123140235 is an apocalyptic number.

123140235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123140235 is a deficient number, since it is larger than the sum of its proper divisors (96661365).

123140235 is a wasteful number, since it uses less digits than its factorization.

123140235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123140235 is about 11096.8569874537. The cubic root of 123140235 is about 497.5079129740.

Adding to 123140235 its reverse (532041321), we get a palindrome (655181556).

The spelling of 123140235 in words is "one hundred twenty-three million, one hundred forty thousand, two hundred thirty-five".