1001042012243 has 24 divisors (see below), whose sum is σ = 1300309462368. Its totient is φ = 750347255808.

The previous prime is 1001042012239. The next prime is 1001042012287. The reversal of 1001042012243 is 3422102401001.

It is not a de Polignac number, because 1001042012243 - 2² = 1001042012239 is a prime.

It is a super-2 number, since 2×1001042012243² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001042015243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15203246 + ... + 15268947.

It is an arithmetic number, because the mean of its divisors is an integer number (54179560932).

Almost surely, 2^{1001042012243} is an apocalyptic number.

1001042012243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001042012243 is a deficient number, since it is larger than the sum of its proper divisors (299267450125).

1001042012243 is a wasteful number, since it uses less digits than its factorization.

1001042012243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30472251 (or 30472232 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1001042012243 its reverse (3422102401001), we get a palindrome (4423144413244).

The spelling of 1001042012243 in words is "one trillion, one billion, forty-two million, twelve thousand, two hundred forty-three".