12420355143015 has 48 divisors (see below), whose sum is σ = 22386806227968. Its totient is φ = 6606139610016.

The previous prime is 12420355143011. The next prime is 12420355143047. The reversal of 12420355143015 is 51034155302421.

12420355143015 is a `hidden beast` number, since 1 + 2 + 4 + 203 + 5 + 5 + 1 + 430 + 15 = 666.

It is not a de Polignac number, because 12420355143015 - 2² = 12420355143011 is a prime.

It is a super-2 number, since 2×12420355143015² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420355143011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13481227 + ... + 14373036.

It is an arithmetic number, because the mean of its divisors is an integer number (466391796416).

Almost surely, 2^{12420355143015} is an apocalyptic number.

12420355143015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12420355143015 is a deficient number, since it is larger than the sum of its proper divisors (9966451084953).

12420355143015 is an equidigital number, since it uses as much as digits as its factorization.

12420355143015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27854650 (or 27854638 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 12420355143015 in words is "twelve trillion, four hundred twenty billion, three hundred fifty-five million, one hundred forty-three thousand, fifteen".