123134140 has 24 divisors (see below), whose sum is σ = 261858240. Its totient is φ = 48629568.

The previous prime is 123134083. The next prime is 123134153. The reversal of 123134140 is 41431321.

123134140 is nontrivially palindromic in base 15.

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, 37387 + ... + 40546.

It is an arithmetic number, because the mean of its divisors is an integer number (10910760).

Almost surely, 2^123134140 is an apocalyptic number.

123134140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123134140 is an abundant number, since it is smaller than the sum of its proper divisors (138724100).

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

123134140 is a wasteful number, since it uses less digits than its factorization.

123134140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78021 (or 78019 counting only the distinct ones).

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

The square root of 123134140 is about 11096.5823567439. The cubic root of 123134140 is about 497.4997045527.

Adding to 123134140 its reverse (41431321), we get a palindrome (164565461).

The spelling of 123134140 in words is "one hundred twenty-three million, one hundred thirty-four thousand, one hundred forty".