123149100 has 36 divisors (see below), whose sum is σ = 356312264. Its totient is φ = 32839680.

The previous prime is 123149083. The next prime is 123149123. The reversal of 123149100 is 1941321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204949 + ... + 205548.

Almost surely, 2^123149100 is an apocalyptic number.

123149100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123149100 is an abundant number, since it is smaller than the sum of its proper divisors (233163164).

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

123149100 is a wasteful number, since it uses less digits than its factorization.

123149100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410514 (or 410507 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 123149100 is about 11097.2564176917. The cubic root of 123149100 is about 497.5198514002.

The spelling of 123149100 in words is "one hundred twenty-three million, one hundred forty-nine thousand, one hundred".