1012143300 has 144 divisors (see below), whose sum is σ = 3523107840. Its totient is φ = 219162240.

The previous prime is 1012143271. The next prime is 1012143323. The reversal of 1012143300 is 33412101.

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 1012143300.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27217 + ... + 52583.

Almost surely, 2^1012143300 is an apocalyptic number.

1012143300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012143300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761553920).

1012143300 is an abundant number, since it is smaller than the sum of its proper divisors (2510964540).

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

1012143300 is a wasteful number, since it uses less digits than its factorization.

1012143300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25410 (or 25403 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1012143300 is about 31814.1996599003. The cubic root of 1012143300 is about 1004.0314918986.

Adding to 1012143300 its reverse (33412101), we get a palindrome (1045555401).

The spelling of 1012143300 in words is "one billion, twelve million, one hundred forty-three thousand, three hundred".