12043242135 has 16 divisors (see below), whose sum is σ = 21410208480. Its totient is φ = 6423062400.

The previous prime is 12043242077. The next prime is 12043242151. The reversal of 12043242135 is 53124234021.

12043242135 is a `hidden beast` number, since 1 + 204 + 3 + 2 + 421 + 35 = 666.

It is not a de Polignac number, because 12043242135 - 2⁷ = 12043242007 is a prime.

It is a super-2 number, since 2×12043242135² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12043242099 and 12043242108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44604466 + ... + 44604735.

It is an arithmetic number, because the mean of its divisors is an integer number (1338138030).

Almost surely, 2^12043242135 is an apocalyptic number.

12043242135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12043242135 is a deficient number, since it is larger than the sum of its proper divisors (9366966345).

12043242135 is an equidigital number, since it uses as much as digits as its factorization.

12043242135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89209215 (or 89209209 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12043242135 its reverse (53124234021), we get a palindrome (65167476156).

The spelling of 12043242135 in words is "twelve billion, forty-three million, two hundred forty-two thousand, one hundred thirty-five".