12100442 has 4 divisors (see below), whose sum is σ = 18150666. Its totient is φ = 6050220.

The previous prime is 12100441. The next prime is 12100471. The reversal of 12100442 is 24400121.

12100442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24400121 = 4289 ⋅5689.

It can be written as a sum of positive squares in only one way, i.e., 11689561 + 410881 = 3419^2 + 641^2 .

It is not an unprimeable number, because it can be changed into a prime (12100441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025109 + ... + 3025112.

Almost surely, 2^12100442 is an apocalyptic number.

12100442 is a deficient number, since it is larger than the sum of its proper divisors (6050224).

12100442 is an equidigital number, since it uses as much as digits as its factorization.

12100442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050223.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12100442 is about 3478.5689586380. The cubic root of 12100442 is about 229.5798378334.

Adding to 12100442 its reverse (24400121), we get a palindrome (36500563).

The spelling of 12100442 in words is "twelve million, one hundred thousand, four hundred forty-two".