12042031440 has 40 divisors (see below), whose sum is σ = 37330298208. Its totient is φ = 3211208320.

The previous prime is 12042031423. The next prime is 12042031453. The reversal of 12042031440 is 4413024021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×12042031440³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25087326 + ... + 25087805.

Almost surely, 2^12042031440 is an apocalyptic number.

12042031440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12042031440 is an abundant number, since it is smaller than the sum of its proper divisors (25288266768).

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

12042031440 is a wasteful number, since it uses less digits than its factorization.

12042031440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50175147 (or 50175141 counting only the distinct ones).

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

Adding to 12042031440 its reverse (4413024021), we get a palindrome (16455055461).

The spelling of 12042031440 in words is "twelve billion, forty-two million, thirty-one thousand, four hundred forty".