123180340 has 24 divisors (see below), whose sum is σ = 259644672. Its totient is φ = 49088160.

The previous prime is 123180311. The next prime is 123180349. The reversal of 123180340 is 43081321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123180349) 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, 5944 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (10818528).

Almost surely, 2^123180340 is an apocalyptic number.

123180340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123180340 is an abundant number, since it is smaller than the sum of its proper divisors (136464332).

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

123180340 is a wasteful number, since it uses less digits than its factorization.

123180340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23007 (or 23005 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 123180340 is about 11098.6638835492. The cubic root of 123180340 is about 497.5619174975.

The spelling of 123180340 in words is "one hundred twenty-three million, one hundred eighty thousand, three hundred forty".