123140 has 24 divisors (see below), whose sum is σ = 266112. Its totient is φ = 47840.

The previous prime is 123127. The next prime is 123143. The reversal of 123140 is 41321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123143) by changing a digit.

123140 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2¹²³¹⁴⁰ is an apocalyptic number.

123140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123140 is an abundant number, since it is smaller than the sum of its proper divisors (142972).

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

123140 is a wasteful number, since it uses less digits than its factorization.

123140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 123140 is about 350.9130946545. The cubic root of 123140 is about 49.7507596494.

Adding to 123140 its reverse (41321), we get a palindrome (164461).

The spelling of 123140 in words is "one hundred twenty-three thousand, one hundred forty", and thus it is an iban number.