1543342040 has 32 divisors (see below), whose sum is σ = 3480615360. Its totient is φ = 615897600.

The previous prime is 1543342027. The next prime is 1543342043. The reversal of 1543342040 is 402433451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543342043) 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, 27521 + ... + 62000.

It is an arithmetic number, because the mean of its divisors is an integer number (108769230).

Almost surely, 2^1543342040 is an apocalyptic number.

1543342040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1543342040 is an abundant number, since it is smaller than the sum of its proper divisors (1937273320).

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

1543342040 is a wasteful number, since it uses less digits than its factorization.

1543342040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89963 (or 89959 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1543342040 is about 39285.3921960822. The cubic root of 1543342040 is about 1155.6351123042.

Adding to 1543342040 its reverse (402433451), we get a palindrome (1945775491).

The spelling of 1543342040 in words is "one billion, five hundred forty-three million, three hundred forty-two thousand, forty".