12144342 has 16 divisors (see below), whose sum is σ = 27758592. Its totient is φ = 3469800.

The previous prime is 12144331. The next prime is 12144347. The reversal of 12144342 is 24344121.

It is a super-2 number, since 2×12144342² = 294970085225928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144347) 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, 144534 + ... + 144617.

It is an arithmetic number, because the mean of its divisors is an integer number (1734912).

Almost surely, 2^12144342 is an apocalyptic number.

12144342 is an abundant number, since it is smaller than the sum of its proper divisors (15614250).

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

12144342 is a wasteful number, since it uses less digits than its factorization.

12144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289163.

The product of its digits is 768, while the sum is 21.

The square root of 12144342 is about 3484.8733119010. The cubic root of 12144342 is about 229.8571387554.

Adding to 12144342 its reverse (24344121), we get a palindrome (36488463).

The spelling of 12144342 in words is "twelve million, one hundred forty-four thousand, three hundred forty-two".