123909238 has 8 divisors (see below), whose sum is σ = 187569360. Its totient is φ = 61386120.

The previous prime is 123909229. The next prime is 123909259. The reversal of 123909238 is 832909321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 123909197 and 123909206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283978 + ... + 284413.

It is an arithmetic number, because the mean of its divisors is an integer number (23446170).

Almost surely, 2^123909238 is an apocalyptic number.

123909238 is a deficient number, since it is larger than the sum of its proper divisors (63660122).

123909238 is a wasteful number, since it uses less digits than its factorization.

123909238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568502.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 123909238 is about 11131.4526455445. The cubic root of 123909238 is about 498.5413997750.

The spelling of 123909238 in words is "one hundred twenty-three million, nine hundred nine thousand, two hundred thirty-eight".