123641130 has 64 divisors (see below), whose sum is σ = 304041600. Its totient is φ = 32169984.

The previous prime is 123641129. The next prime is 123641131. The reversal of 123641130 is 31146321.

It is an interprime number because it is at equal distance from previous prime (123641129) and next prime (123641131).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123641097 and 123641106.

It is not an unprimeable number, because it can be changed into a prime (123641131) 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, 275146 + ... + 275594.

It is an arithmetic number, because the mean of its divisors is an integer number (4750650).

Almost surely, 2^123641130 is an apocalyptic number.

123641130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123641130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152020800).

123641130 is an abundant number, since it is smaller than the sum of its proper divisors (180400470).

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

123641130 is a wasteful number, since it uses less digits than its factorization.

123641130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663.

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

The square root of 123641130 is about 11119.4033113293. The cubic root of 123641130 is about 498.1815679605.

Adding to 123641130 its reverse (31146321), we get a palindrome (154787451).

The spelling of 123641130 in words is "one hundred twenty-three million, six hundred forty-one thousand, one hundred thirty".