123408842 has 8 divisors (see below), whose sum is σ = 185245536. Its totient is φ = 61660332.

The previous prime is 123408773. The next prime is 123408851. The reversal of 123408842 is 248804321.

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 = 123408799 and 123408808.

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, 18428 + ... + 24215.

It is an arithmetic number, because the mean of its divisors is an integer number (23155692).

Almost surely, 2^123408842 is an apocalyptic number.

123408842 is a deficient number, since it is larger than the sum of its proper divisors (61836694).

123408842 is a wasteful number, since it uses less digits than its factorization.

123408842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44092.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 123408842 is about 11108.9532360164. The cubic root of 123408842 is about 497.8693898970.

The spelling of 123408842 in words is "one hundred twenty-three million, four hundred eight thousand, eight hundred forty-two".