123430100 has 36 divisors (see below), whose sum is σ = 268537500. Its totient is φ = 49244160.

The previous prime is 123430091. The next prime is 123430117. The reversal of 123430100 is 1034321.

It can be written as a sum of positive squares in 6 ways, for example, as 10942864 + 112487236 = 3308^2 + 10606^2 .

It is a congruent number.

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, 43526 + ... + 46274.

It is an arithmetic number, because the mean of its divisors is an integer number (7459375).

Almost surely, 2^123430100 is an apocalyptic number.

123430100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123430100 is an abundant number, since it is smaller than the sum of its proper divisors (145107400).

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

123430100 is a wasteful number, since it uses less digits than its factorization.

123430100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123430100 is about 11109.9099906345. The cubic root of 123430100 is about 497.8979753686.

Adding to 123430100 its reverse (1034321), we get a palindrome (124464421).

The spelling of 123430100 in words is "one hundred twenty-three million, four hundred thirty thousand, one hundred".