123012132 has 12 divisors (see below), whose sum is σ = 287028336. Its totient is φ = 41004040.

The previous prime is 123012107. The next prime is 123012143. The reversal of 123012132 is 231210321.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5125494 + ... + 5125517.

It is an arithmetic number, because the mean of its divisors is an integer number (23919028).

Almost surely, 2^123012132 is an apocalyptic number.

123012132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123012132 is an abundant number, since it is smaller than the sum of its proper divisors (164016204).

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

123012132 is a wasteful number, since it uses less digits than its factorization.

123012132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10251018 (or 10251016 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123012132 is about 11091.0834457234. The cubic root of 123012132 is about 497.3353336671.

Adding to 123012132 its reverse (231210321), we get a palindrome (354222453).

The spelling of 123012132 in words is "one hundred twenty-three million, twelve thousand, one hundred thirty-two".