123195730 has 16 divisors (see below), whose sum is σ = 253431360. Its totient is φ = 42238512.

The previous prime is 123195727. The next prime is 123195763. The reversal of 123195730 is 37591321.

It is a junction number, because it is equal to n+sod(n) for n = 123195692 and 123195701.

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, 879900 + ... + 880039.

It is an arithmetic number, because the mean of its divisors is an integer number (15839460).

Almost surely, 2^123195730 is an apocalyptic number.

123195730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123195730 is an abundant number, since it is smaller than the sum of its proper divisors (130235630).

123195730 is a wasteful number, since it uses less digits than its factorization.

123195730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759953.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 123195730 is about 11099.3571885943. The cubic root of 123195730 is about 497.5826382257.

The spelling of 123195730 in words is "one hundred twenty-three million, one hundred ninety-five thousand, seven hundred thirty".