1021143000 has 64 divisors (see below), whose sum is σ = 3185975520. Its totient is φ = 272304000.

The previous prime is 1021142987. The next prime is 1021143001. The reversal of 1021143000 is 3411201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021143001) 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 15 ways as a sum of consecutive naturals, for example, 167191 + ... + 173190.

Almost surely, 2^1021143000 is an apocalyptic number.

1021143000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021143000 is an abundant number, since it is smaller than the sum of its proper divisors (2164832520).

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

1021143000 is a wasteful number, since it uses less digits than its factorization.

1021143000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340405 (or 340391 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1021143000 is about 31955.3281942151. The cubic root of 1021143000 is about 1006.9985723878.

Adding to 1021143000 its reverse (3411201), we get a palindrome (1024554201).

The spelling of 1021143000 in words is "one billion, twenty-one million, one hundred forty-three thousand".