123512132 has 6 divisors (see below), whose sum is σ = 216146238. Its totient is φ = 61756064.

The previous prime is 123512119. The next prime is 123512143. The reversal of 123512132 is 231215321.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 44408896 = 8894^2 + 6664^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15439013 + ... + 15439020.

It is an arithmetic number, because the mean of its divisors is an integer number (36024373).

Almost surely, 2^123512132 is an apocalyptic number.

It is an amenable number.

123512132 is a deficient number, since it is larger than the sum of its proper divisors (92634106).

123512132 is a wasteful number, since it uses less digits than its factorization.

123512132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30878037 (or 30878035 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 123512132 is about 11113.6012165274. The cubic root of 123512132 is about 498.0082524183.

Adding to 123512132 its reverse (231215321), we get a palindrome (354727453).

The spelling of 123512132 in words is "one hundred twenty-three million, five hundred twelve thousand, one hundred thirty-two".