1542042443 has 12 divisors (see below), whose sum is σ = 1646379600. Its totient is φ = 1443987072.

The previous prime is 1542042421. The next prime is 1542042449. The reversal of 1542042443 is 3442402451.

It is not a de Polignac number, because 1542042443 - 2¹⁰ = 1542041419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542042449) 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 11 ways as a sum of consecutive naturals, for example, 44105 + ... + 70917.

It is an arithmetic number, because the mean of its divisors is an integer number (137198300).

Almost surely, 2^1542042443 is an apocalyptic number.

1542042443 is a deficient number, since it is larger than the sum of its proper divisors (104337157).

1542042443 is a wasteful number, since it uses less digits than its factorization.

1542042443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27046 (or 27029 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 1542042443 is about 39268.8482515085. The cubic root of 1542042443 is about 1155.3106472496.

Adding to 1542042443 its reverse (3442402451), we get a palindrome (4984444894).

The spelling of 1542042443 in words is "one billion, five hundred forty-two million, forty-two thousand, four hundred forty-three".