123136104 has 96 divisors (see below), whose sum is σ = 381049920. Its totient is φ = 32467968.

The previous prime is 123136067. The next prime is 123136141. The reversal of 123136104 is 401631321.

It is an interprime number because it is at equal distance from previous prime (123136067) and next prime (123136141).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26224 + ... + 30560.

It is an arithmetic number, because the mean of its divisors is an integer number (3969270).

Almost surely, 2^123136104 is an apocalyptic number.

123136104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123136104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190524960).

123136104 is an abundant number, since it is smaller than the sum of its proper divisors (257913816).

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

123136104 is a wasteful number, since it uses less digits than its factorization.

123136104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379 (or 4362 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 123136104 is about 11096.6708521070. The cubic root of 123136104 is about 497.5023495929.

Adding to 123136104 its reverse (401631321), we get a palindrome (524767425).

The spelling of 123136104 in words is "one hundred twenty-three million, one hundred thirty-six thousand, one hundred four".