1242200043135 has 32 divisors (see below), whose sum is σ = 2208460001280. Its totient is φ = 662475379104.

The previous prime is 1242200043127. The next prime is 1242200043157. The reversal of 1242200043135 is 5313400022421.

1242200043135 is a `hidden beast` number, since 1 + 2 + 4 + 220 + 0 + 0 + 431 + 3 + 5 = 666.

It is not a de Polignac number, because 1242200043135 - 2³ = 1242200043127 is a prime.

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 = 1242200043099 and 1242200043108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2804622 + ... + 3217188.

It is an arithmetic number, because the mean of its divisors is an integer number (69014375040).

Almost surely, 2^{1242200043135} is an apocalyptic number.

1242200043135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242200043135 is a deficient number, since it is larger than the sum of its proper divisors (966259958145).

1242200043135 is a wasteful number, since it uses less digits than its factorization.

1242200043135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434884 (or 434878 counting only the distinct ones).

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

Adding to 1242200043135 its reverse (5313400022421), we get a palindrome (6555600065556).

The spelling of 1242200043135 in words is "one trillion, two hundred forty-two billion, two hundred million, forty-three thousand, one hundred thirty-five".