12042432 has 140 divisors (see below), whose sum is σ = 37618416. Its totient is φ = 3801600.

The previous prime is 12042421. The next prime is 12042439. The reversal of 12042432 is 23424021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12042439) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119182 + ... + 119282.

Almost surely, 2^12042432 is an apocalyptic number.

12042432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12042432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18809208).

12042432 is an abundant number, since it is smaller than the sum of its proper divisors (25575984).

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

12042432 is a wasteful number, since it uses less digits than its factorization.

12042432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12042432 is about 3470.2207422583. The cubic root of 12042432 is about 229.2123783781.

Adding to 12042432 its reverse (23424021), we get a palindrome (35466453).

The spelling of 12042432 in words is "twelve million, forty-two thousand, four hundred thirty-two".