12132442 has 32 divisors (see below), whose sum is σ = 21555072. Its totient is φ = 5014464.

The previous prime is 12132401. The next prime is 12132443. The reversal of 12132442 is 24423121.

It is a super-2 number, since 2×12132442² = 294392297766728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12132443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61488 + ... + 61684.

It is an arithmetic number, because the mean of its divisors is an integer number (673596).

Almost surely, 2^12132442 is an apocalyptic number.

12132442 is a deficient number, since it is larger than the sum of its proper divisors (9422630).

12132442 is a wasteful number, since it uses less digits than its factorization.

12132442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 384, while the sum is 19.

The square root of 12132442 is about 3483.1655142987. The cubic root of 12132442 is about 229.7820367350.

Adding to 12132442 its reverse (24423121), we get a palindrome (36555563).

It can be divided in two parts, 1213 and 2442, that added together give a triangular number (3655 = T₈₅).

The spelling of 12132442 in words is "twelve million, one hundred thirty-two thousand, four hundred forty-two".