1542431343 has 16 divisors (see below), whose sum is σ = 2170841600. Its totient is φ = 974154168.

The previous prime is 1542431339. The next prime is 1542431491. The reversal of 1542431343 is 3431342451.

It is not a de Polignac number, because 1542431343 - 2² = 1542431339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1542431343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542431243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16903 + ... + 58056.

It is an arithmetic number, because the mean of its divisors is an integer number (135677600).

Almost surely, 2^1542431343 is an apocalyptic number.

1542431343 is a deficient number, since it is larger than the sum of its proper divisors (628410257).

1542431343 is an frugal number, since it uses more digits than its factorization.

1542431343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75019 (or 74981 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 1542431343 is about 39273.7997015822. The cubic root of 1542431343 is about 1155.4077614260.

Adding to 1542431343 its reverse (3431342451), we get a palindrome (4973773794).

The spelling of 1542431343 in words is "one billion, five hundred forty-two million, four hundred thirty-one thousand, three hundred forty-three".