1020422143 has 4 divisors (see below), whose sum is σ = 1098916168. Its totient is φ = 941928120.

The previous prime is 1020422141. The next prime is 1020422147. The reversal of 1020422143 is 3412240201.

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 1020422143 - 2¹ = 1020422141 is a prime.

It is a super-2 number, since 2×1020422143² = 2082522699849424898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020422143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020422141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39246993 + ... + 39247018.

It is an arithmetic number, because the mean of its divisors is an integer number (274729042).

Almost surely, 2^1020422143 is an apocalyptic number.

1020422143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1020422143 is a deficient number, since it is larger than the sum of its proper divisors (78494025).

1020422143 is an equidigital number, since it uses as much as digits as its factorization.

1020422143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78494024.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1020422143 is about 31944.0470667071. The cubic root of 1020422143 is about 1006.7615592730.

Adding to 1020422143 its reverse (3412240201), we get a palindrome (4432662344).

The spelling of 1020422143 in words is "one billion, twenty million, four hundred twenty-two thousand, one hundred forty-three".