12415142120440 has 32 divisors (see below), whose sum is σ = 27940091760000. Its totient is φ = 4964986272384.

The previous prime is 12415142120431. The next prime is 12415142120443. The reversal of 12415142120440 is 4402124151421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12415142120443) 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, 33267615 + ... + 33638734.

It is an arithmetic number, because the mean of its divisors is an integer number (873127867500).

Almost surely, 2^{12415142120440} is an apocalyptic number.

12415142120440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12415142120440 is an abundant number, since it is smaller than the sum of its proper divisors (15524949639560).

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

12415142120440 is a wasteful number, since it uses less digits than its factorization.

12415142120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66910999 (or 66910995 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 12415142120440 its reverse (4402124151421), we get a palindrome (16817266271861).

The spelling of 12415142120440 in words is "twelve trillion, four hundred fifteen billion, one hundred forty-two million, one hundred twenty thousand, four hundred forty".