1542515442 has 32 divisors (see below), whose sum is σ = 3325250880. Its totient is φ = 474204480.

The previous prime is 1542515441. The next prime is 1542515461. The reversal of 1542515442 is 2445152451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1542515441) 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 15 ways as a sum of consecutive naturals, for example, 87817 + ... + 103907.

It is an arithmetic number, because the mean of its divisors is an integer number (103914090).

Almost surely, 2^1542515442 is an apocalyptic number.

1542515442 is an abundant number, since it is smaller than the sum of its proper divisors (1782735438).

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

1542515442 is a wasteful number, since it uses less digits than its factorization.

1542515442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17338.

The product of its digits is 32000, while the sum is 33.

The square root of 1542515442 is about 39274.8703626123. The cubic root of 1542515442 is about 1155.4287600638.

Adding to 1542515442 its reverse (2445152451), we get a palindrome (3987667893).

The spelling of 1542515442 in words is "one billion, five hundred forty-two million, five hundred fifteen thousand, four hundred forty-two".