1002043251541 has 4 divisors (see below), whose sum is σ = 1007579402284. Its totient is φ = 996507100800.

The previous prime is 1002043251529. The next prime is 1002043251553. The reversal of 1002043251541 is 1451523402001.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1002043251529) and next prime (1002043251553).

It can be written as a sum of positive squares in 2 ways, for example, as 94746996100 + 907296255441 = 307810^2 + 952521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002043251541 - 2¹⁵ = 1002043218773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002043251511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768075100 + ... + 2768075461.

It is an arithmetic number, because the mean of its divisors is an integer number (251894850571).

Almost surely, 2^{1002043251541} is an apocalyptic number.

It is an amenable number.

1002043251541 is a deficient number, since it is larger than the sum of its proper divisors (5536150743).

1002043251541 is an equidigital number, since it uses as much as digits as its factorization.

1002043251541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536150742.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1002043251541 its reverse (1451523402001), we get a palindrome (2453566653542).

The spelling of 1002043251541 in words is "one trillion, two billion, forty-three million, two hundred fifty-one thousand, five hundred forty-one".