1001202543 has 12 divisors (see below), whose sum is σ = 1577652648. Its totient is φ = 606789360.

The previous prime is 1001202541. The next prime is 1001202547. The reversal of 1001202543 is 3452021001.

1001202543 is a `hidden beast` number, since 1 + 0 + 0 + 120 + 2 + 543 = 666.

It is not a de Polignac number, because 1001202543 - 2¹ = 1001202541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001202541) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5056480 + ... + 5056677.

It is an arithmetic number, because the mean of its divisors is an integer number (131471054).

Almost surely, 2^1001202543 is an apocalyptic number.

1001202543 is a deficient number, since it is larger than the sum of its proper divisors (576450105).

1001202543 is a wasteful number, since it uses less digits than its factorization.

1001202543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10113174 (or 10113171 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1001202543 is about 31641.7847631893. The cubic root of 1001202543 is about 1000.4006870951.

Adding to 1001202543 its reverse (3452021001), we get a palindrome (4453223544).

The spelling of 1001202543 in words is "one billion, one million, two hundred two thousand, five hundred forty-three".