1000202143 has 4 divisors (see below), whose sum is σ = 1000312408. Its totient is φ = 1000091880.

The previous prime is 1000202113. The next prime is 1000202149. The reversal of 1000202143 is 3412020001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000202143 - 2¹⁷ = 1000071071 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 (1000202149) 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, 40173 + ... + 60118.

It is an arithmetic number, because the mean of its divisors is an integer number (250078102).

Almost surely, 2^1000202143 is an apocalyptic number.

1000202143 is a deficient number, since it is larger than the sum of its proper divisors (110265).

1000202143 is an equidigital number, since it uses as much as digits as its factorization.

1000202143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110264.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1000202143 is about 31625.9726016450. The cubic root of 1000202143 is about 1000.0673764603.

Adding to 1000202143 its reverse (3412020001), we get a palindrome (4412222144).

The spelling of 1000202143 in words is "one billion, two hundred two thousand, one hundred forty-three".