4012123324144 has 80 divisors (see below), whose sum is σ = 8739969606144. Its totient is φ = 1770317049600.

The previous prime is 4012123324043. The next prime is 4012123324151. The reversal of 4012123324144 is 4414233212104.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9020749 + ... + 9455059.

Almost surely, 2^{4012123324144} 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 4012123324144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4369984803072).

4012123324144 is an abundant number, since it is smaller than the sum of its proper divisors (4727846282000).

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

4012123324144 is a wasteful number, since it uses less digits than its factorization.

4012123324144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436286 (or 436280 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4012123324144 its reverse (4414233212104), we get a palindrome (8426356536248).

The spelling of 4012123324144 in words is "four trillion, twelve billion, one hundred twenty-three million, three hundred twenty-four thousand, one hundred forty-four".