123670140 has 48 divisors (see below), whose sum is σ = 377758080. Its totient is φ = 29980480.

The previous prime is 123670133. The next prime is 123670159. The reversal of 123670140 is 41076321.

It is a self number, because there is not a number n which added to its sum of digits gives 123670140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93030 + ... + 94349.

It is an arithmetic number, because the mean of its divisors is an integer number (7869960).

Almost surely, 2^123670140 is an apocalyptic number.

123670140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123670140 is an abundant number, since it is smaller than the sum of its proper divisors (254087940).

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

123670140 is a wasteful number, since it uses less digits than its factorization.

123670140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187402 (or 187400 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 123670140 is about 11120.7077112925. The cubic root of 123670140 is about 498.2205278037.

The spelling of 123670140 in words is "one hundred twenty-three million, six hundred seventy thousand, one hundred forty".