123140260 has 12 divisors (see below), whose sum is σ = 258594588. Its totient is φ = 49256096.

The previous prime is 123140221. The next prime is 123140279. The reversal of 123140260 is 62041321.

It can be written as a sum of positive squares in 2 ways, for example, as 45805824 + 77334436 = 6768^2 + 8794^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3078487 + ... + 3078526.

It is an arithmetic number, because the mean of its divisors is an integer number (21549549).

Almost surely, 2^123140260 is an apocalyptic number.

123140260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123140260 is an abundant number, since it is smaller than the sum of its proper divisors (135454328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123140260 is a wasteful number, since it uses less digits than its factorization.

123140260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157022 (or 6157020 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 123140260 is about 11096.8581138987. The cubic root of 123140260 is about 497.5079466421.

Adding to 123140260 its reverse (62041321), we get a palindrome (185181581).

The spelling of 123140260 in words is "one hundred twenty-three million, one hundred forty thousand, two hundred sixty".