1020051143 has 4 divisors (see below), whose sum is σ = 1023655848. Its totient is φ = 1016446440.

The previous prime is 1020051139. The next prime is 1020051167. The reversal of 1020051143 is 3411500201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411500201 = 1523 ⋅2239987.

It is a cyclic number.

It is not a de Polignac number, because 1020051143 - 2² = 1020051139 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 (1020051443) 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 3 ways as a sum of consecutive naturals, for example, 1801928 + ... + 1802493.

It is an arithmetic number, because the mean of its divisors is an integer number (255913962).

Almost surely, 2^1020051143 is an apocalyptic number.

1020051143 is a deficient number, since it is larger than the sum of its proper divisors (3604705).

1020051143 is an equidigital number, since it uses as much as digits as its factorization.

1020051143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604704.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1020051143 is about 31938.2395100294. The cubic root of 1020051143 is about 1006.6395333656.

Adding to 1020051143 its reverse (3411500201), we get a palindrome (4431551344).

The spelling of 1020051143 in words is "one billion, twenty million, fifty-one thousand, one hundred forty-three".