1543342020 has 96 divisors (see below), whose sum is σ = 4748405760. Its totient is φ = 371429760.

The previous prime is 1543342007. The next prime is 1543342027. The reversal of 1543342020 is 202433451.

It is not an unprimeable number, because it can be changed into a prime (1543342027) 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 31 ways as a sum of consecutive naturals, for example, 83329 + ... + 100151.

It is an arithmetic number, because the mean of its divisors is an integer number (49462560).

Almost surely, 2^1543342020 is an apocalyptic number.

1543342020 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 1543342020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2374202880).

1543342020 is an abundant number, since it is smaller than the sum of its proper divisors (3205063740).

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

1543342020 is a wasteful number, since it uses less digits than its factorization.

1543342020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16985 (or 16983 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1543342020 is about 39285.3919415347. The cubic root of 1543342020 is about 1155.6351073123.

Adding to 1543342020 its reverse (202433451), we get a palindrome (1745775471).

The spelling of 1543342020 in words is "one billion, five hundred forty-three million, three hundred forty-two thousand, twenty".