123481839 has 32 divisors (see below), whose sum is σ = 184472064. Its totient is φ = 72973440.

The previous prime is 123481837. The next prime is 123481843. The reversal of 123481839 is 938184321.

It is not a de Polignac number, because 123481839 - 2¹ = 123481837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 123481797 and 123481806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123481837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119254 + ... + 120284.

It is an arithmetic number, because the mean of its divisors is an integer number (5764752).

Almost surely, 2^123481839 is an apocalyptic number.

123481839 is a deficient number, since it is larger than the sum of its proper divisors (60990225).

123481839 is a wasteful number, since it uses less digits than its factorization.

123481839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its digits is 41472, while the sum is 39.

The square root of 123481839 is about 11112.2382533853. The cubic root of 123481839 is about 497.9675346975.

The spelling of 123481839 in words is "one hundred twenty-three million, four hundred eighty-one thousand, eight hundred thirty-nine".