1542839841 has 9 divisors (see below), whose sum is σ = 2228716659. Its totient is φ = 1028481336.

The previous prime is 1542839833. The next prime is 1542839849. The reversal of 1542839841 is 1489382451.

The square root of 1542839841 is 39279.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1542839833) and next prime (1542839849).

It can be written as a sum of positive squares in only one way, i.e., 1393902225 + 148937616 = 37335^2 + 12204^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1542839841 - 2³ = 1542839833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1542839849) 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 8 ways as a sum of consecutive naturals, for example, 111291 + ... + 124383.

Almost surely, 2^1542839841 is an apocalyptic number.

1542839841 is the 39279-th square number.

1542839841 is the 19640-th centered octagonal number.

It is an amenable number.

1542839841 is a deficient number, since it is larger than the sum of its proper divisors (685876818).

1542839841 is an frugal number, since it uses more digits than its factorization.

1542839841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26192 (or 13096 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The cubic root of 1542839841 is about 1155.5097519406.

The spelling of 1542839841 in words is "one billion, five hundred forty-two million, eight hundred thirty-nine thousand, eight hundred forty-one".