123471136 has 48 divisors (see below), whose sum is σ = 258660864. Its totient is φ = 57816064.

The previous prime is 123471121. The next prime is 123471149. The reversal of 123471136 is 631174321.

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, 142641 + ... + 143503.

It is an arithmetic number, because the mean of its divisors is an integer number (5388768).

Almost surely, 2^123471136 is an apocalyptic number.

123471136 is a gapful number since it is divisible by the number (16) 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 123471136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129330432).

123471136 is an abundant number, since it is smaller than the sum of its proper divisors (135189728).

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

123471136 is a wasteful number, since it uses less digits than its factorization.

123471136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1145 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 123471136 is about 11111.7566568027. The cubic root of 123471136 is about 497.9531468853.

The spelling of 123471136 in words is "one hundred twenty-three million, four hundred seventy-one thousand, one hundred thirty-six".