123509422 has 8 divisors (see below), whose sum is σ = 185316336. Its totient is φ = 61737312.

The previous prime is 123509413. The next prime is 123509453. The reversal of 123509422 is 224905321.

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

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, 3718 + ... + 16150.

It is an arithmetic number, because the mean of its divisors is an integer number (23164542).

Almost surely, 2^123509422 is an apocalyptic number.

123509422 is a deficient number, since it is larger than the sum of its proper divisors (61806914).

123509422 is a wasteful number, since it uses less digits than its factorization.

123509422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17402.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 123509422 is about 11113.4792931827. The cubic root of 123509422 is about 498.0046100980.

It can be divided in two parts, 123 and 509422, that added together give a triangular number (509545 = T₁₀₀₉).

The spelling of 123509422 in words is "one hundred twenty-three million, five hundred nine thousand, four hundred twenty-two".