123861132 has 36 divisors (see below), whose sum is σ = 313434576. Its totient is φ = 41242080.

The previous prime is 123861107. The next prime is 123861137. The reversal of 123861132 is 231168321.

It is a happy number.

123861132 is a `hidden beast` number, since 12 + 3 + 8 + 611 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 123861096 and 123861105.

It is not an unprimeable number, because it can be changed into a prime (123861137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56782 + ... + 58922.

It is an arithmetic number, because the mean of its divisors is an integer number (8706516).

Almost surely, 2^123861132 is an apocalyptic number.

123861132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123861132 is an abundant number, since it is smaller than the sum of its proper divisors (189573444).

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

123861132 is a wasteful number, since it uses less digits than its factorization.

123861132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758 (or 3753 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 123861132 is about 11129.2916216622. The cubic root of 123861132 is about 498.4768742204.

The spelling of 123861132 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, one hundred thirty-two".