123842456 has 32 divisors (see below), whose sum is σ = 247796400. Its totient is φ = 57853440.

The previous prime is 123842449. The next prime is 123842461. The reversal of 123842456 is 654248321.

It is a super-2 number, since 2×123842456² = 30673907816223872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5516 + ... + 16676.

Almost surely, 2^123842456 is an apocalyptic number.

It is an amenable number.

123842456 is an abundant number, since it is smaller than the sum of its proper divisors (123953944).

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

123842456 is a wasteful number, since it uses less digits than its factorization.

123842456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11259 (or 11255 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 123842456 is about 11128.4525429190. The cubic root of 123842456 is about 498.4518192203.

The spelling of 123842456 in words is "one hundred twenty-three million, eight hundred forty-two thousand, four hundred fifty-six".