12142240344 has 144 divisors (see below), whose sum is σ = 37704771000. Its totient is φ = 3516244992.

The previous prime is 12142240343. The next prime is 12142240351. The reversal of 12142240344 is 44304224121.

12142240344 is a `hidden beast` number, since 1 + 214 + 2 + 2 + 403 + 44 = 666.

It is a super-2 number, since 2×12142240344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142240343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 177507 + ... + 236205.

Almost surely, 2^12142240344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12142240344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18852385500).

12142240344 is an abundant number, since it is smaller than the sum of its proper divisors (25562530656).

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

12142240344 is a wasteful number, since it uses less digits than its factorization.

12142240344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58754 (or 58734 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12142240344 its reverse (44304224121), we get a palindrome (56446464465).

The spelling of 12142240344 in words is "twelve billion, one hundred forty-two million, two hundred forty thousand, three hundred forty-four".