123432861 has 8 divisors (see below), whose sum is σ = 166895424. Its totient is φ = 81129440.

The previous prime is 123432847. The next prime is 123432877. The reversal of 123432861 is 168234321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123432861 - 2⁹ = 123432349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123432811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289536 + ... + 289961.

It is an arithmetic number, because the mean of its divisors is an integer number (20861928).

Almost surely, 2^123432861 is an apocalyptic number.

It is an amenable number.

123432861 is a deficient number, since it is larger than the sum of its proper divisors (43462563).

123432861 is an equidigital number, since it uses as much as digits as its factorization.

123432861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579571.

The product of its digits is 6912, while the sum is 30.

The square root of 123432861 is about 11110.0342483721. The cubic root of 123432861 is about 497.9016878236.

The spelling of 123432861 in words is "one hundred twenty-three million, four hundred thirty-two thousand, eight hundred sixty-one".