123700380 has 24 divisors (see below), whose sum is σ = 346361232. Its totient is φ = 32986752.

The previous prime is 123700351. The next prime is 123700387. The reversal of 123700380 is 83007321.

It is a self number, because there is not a number n which added to its sum of digits gives 123700380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123700387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030777 + ... + 1030896.

It is an arithmetic number, because the mean of its divisors is an integer number (14431718).

Almost surely, 2^123700380 is an apocalyptic number.

123700380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123700380 is an abundant number, since it is smaller than the sum of its proper divisors (222660852).

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

123700380 is a wasteful number, since it uses less digits than its factorization.

123700380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061685 (or 2061683 counting only the distinct ones).

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

The square root of 123700380 is about 11122.0672538877. The cubic root of 123700380 is about 498.2611330270.

The spelling of 123700380 in words is "one hundred twenty-three million, seven hundred thousand, three hundred eighty".