12120442 has 16 divisors (see below), whose sum is σ = 19756800. Its totient is φ = 5555520.

The previous prime is 12120431. The next prime is 12120443. The reversal of 12120442 is 24402121.

It is a super-2 number, since 2×12120442² = 293810228550728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12120443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3967 + ... + 6322.

It is an arithmetic number, because the mean of its divisors is an integer number (1234800).

Almost surely, 2^12120442 is an apocalyptic number.

12120442 is a deficient number, since it is larger than the sum of its proper divisors (7636358).

12120442 is a wasteful number, since it uses less digits than its factorization.

12120442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12120442 is about 3481.4425171184. The cubic root of 12120442 is about 229.7062538592.

Subtracting from 12120442 its sum of digits (16), we obtain a triangular number (12120426 = T₄₉₂₃).

Adding to 12120442 its reverse (24402121), we get a palindrome (36522563).

The spelling of 12120442 in words is "twelve million, one hundred twenty thousand, four hundred forty-two".