12042002122440 has 128 divisors (see below), whose sum is σ = 37008950267520. Its totient is φ = 3132724377600.

The previous prime is 12042002122307. The next prime is 12042002122463. The reversal of 12042002122440 is 4422120024021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12042002122440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127218330 + ... + 127312950.

It is an arithmetic number, because the mean of its divisors is an integer number (289132423965).

Almost surely, 2^{12042002122440} is an apocalyptic number.

12042002122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12042002122440 is an abundant number, since it is smaller than the sum of its proper divisors (24966948145080).

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

12042002122440 is a wasteful number, since it uses less digits than its factorization.

12042002122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120543 (or 120539 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12042002122440 its reverse (4422120024021), we get a palindrome (16464122146461).

The spelling of 12042002122440 in words is "twelve trillion, forty-two billion, two million, one hundred twenty-two thousand, four hundred forty".