123690930 has 128 divisors (see below), whose sum is σ = 340402176. Its totient is φ = 28492800.

The previous prime is 123690901. The next prime is 123690977. The reversal of 123690930 is 39096321.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 123690891 and 123690900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1094554 + ... + 1094666.

It is an arithmetic number, because the mean of its divisors is an integer number (2659392).

Almost surely, 2^123690930 is an apocalyptic number.

123690930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123690930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170201088).

123690930 is an abundant number, since it is smaller than the sum of its proper divisors (216711246).

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

123690930 is a wasteful number, since it uses less digits than its factorization.

123690930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 123690930 is about 11121.6424146796. The cubic root of 123690930 is about 498.2484446056.

The spelling of 123690930 in words is "one hundred twenty-three million, six hundred ninety thousand, nine hundred thirty".