123861432 has 16 divisors (see below), whose sum is σ = 309653640. Its totient is φ = 41287136.

The previous prime is 123861427. The next prime is 123861443. The reversal of 123861432 is 234168321.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123861432.

It is a congruent number.

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, 2580423 + ... + 2580470.

Almost surely, 2^123861432 is an apocalyptic number.

123861432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123861432 is an abundant number, since it is smaller than the sum of its proper divisors (185792208).

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

123861432 is a wasteful number, since it uses less digits than its factorization.

123861432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160902 (or 5160898 counting only the distinct ones).

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

The square root of 123861432 is about 11129.3050996008. The cubic root of 123861432 is about 498.4772766683.

The spelling of 123861432 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, four hundred thirty-two".