12040140126 has 16 divisors (see below), whose sum is σ = 27520320384. Its totient is φ = 3440040024.

The previous prime is 12040140121. The next prime is 12040140143. The reversal of 12040140126 is 62104104021.

It is a happy number.

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 (12040140121) 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, 143334960 + ... + 143335043.

It is an arithmetic number, because the mean of its divisors is an integer number (1720020024).

Almost surely, 2^12040140126 is an apocalyptic number.

12040140126 is an abundant number, since it is smaller than the sum of its proper divisors (15480180258).

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

12040140126 is a wasteful number, since it uses less digits than its factorization.

12040140126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286670015.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12040140126 its reverse (62104104021), we get a palindrome (74144244147).

The spelling of 12040140126 in words is "twelve billion, forty million, one hundred forty thousand, one hundred twenty-six".