123132140 has 24 divisors (see below), whose sum is σ = 260556912. Its totient is φ = 48875840.

The previous prime is 123132137. The next prime is 123132157. The reversal of 123132140 is 41231321.

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, 20879 + ... + 26118.

It is an arithmetic number, because the mean of its divisors is an integer number (10856538).

Almost surely, 2^123132140 is an apocalyptic number.

123132140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123132140 is an abundant number, since it is smaller than the sum of its proper divisors (137424772).

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

123132140 is a wasteful number, since it uses less digits than its factorization.

123132140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47137 (or 47135 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 123132140 is about 11096.4922385410. The cubic root of 123132140 is about 497.4970110003.

Adding to 123132140 its reverse (41231321), we get a palindrome (164363461).

The spelling of 123132140 in words is "one hundred twenty-three million, one hundred thirty-two thousand, one hundred forty".