1020143220 has 24 divisors (see below), whose sum is σ = 2856401184. Its totient is φ = 272038176.

The previous prime is 1020143207. The next prime is 1020143227. The reversal of 1020143220 is 223410201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1020143220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020143227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8501134 + ... + 8501253.

It is an arithmetic number, because the mean of its divisors is an integer number (119016716).

Almost surely, 2^1020143220 is an apocalyptic number.

1020143220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020143220 is an abundant number, since it is smaller than the sum of its proper divisors (1836257964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020143220 is a wasteful number, since it uses less digits than its factorization.

1020143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002399 (or 17002397 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1020143220 is about 31939.6809627147. The cubic root of 1020143220 is about 1006.6698212455.

Adding to 1020143220 its reverse (223410201), we get a palindrome (1243553421).

The spelling of 1020143220 in words is "one billion, twenty million, one hundred forty-three thousand, two hundred twenty".