123198075 has 144 divisors (see below), whose sum is σ = 296814336. Its totient is φ = 47174400.

The previous prime is 123198041. The next prime is 123198149. The reversal of 123198075 is 570891321.

It is not a de Polignac number, because 123198075 - 2⁷ = 123197947 is a prime.

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 143 ways as a sum of consecutive naturals, for example, 224952 + ... + 225498.

Almost surely, 2^123198075 is an apocalyptic number.

123198075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123198075 is an abundant number, since it is smaller than the sum of its proper divisors (173616261).

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

123198075 is a wasteful number, since it uses less digits than its factorization.

123198075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 123198075 is about 11099.4628248398. The cubic root of 123198075 is about 497.5857953261.

The spelling of 123198075 in words is "one hundred twenty-three million, one hundred ninety-eight thousand, seventy-five".