12144402 has 24 divisors (see below), whose sum is σ = 26389584. Its totient is φ = 4036344.

The previous prime is 12144389. The next prime is 12144403. The reversal of 12144402 is 20444121.

12144402 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 (12144403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7213 + ... + 8735.

It is an arithmetic number, because the mean of its divisors is an integer number (1099566).

Almost surely, 2^12144402 is an apocalyptic number.

12144402 is an abundant number, since it is smaller than the sum of its proper divisors (14245182).

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

12144402 is a wasteful number, since it uses less digits than its factorization.

12144402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974 (or 1971 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 12144402 is about 3484.8819205247. The cubic root of 12144402 is about 229.8575172967.

Adding to 12144402 its reverse (20444121), we get a palindrome (32588523).

The spelling of 12144402 in words is "twelve million, one hundred forty-four thousand, four hundred two".