1543139 has 12 divisors (see below), whose sum is σ = 1748016. Its totient is φ = 1359072.

The previous prime is 1543133. The next prime is 1543169. The reversal of 1543139 is 9313451.

It is not a de Polignac number, because 1543139 - 2²⁰ = 494563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3689 + ... + 4085.

It is an arithmetic number, because the mean of its divisors is an integer number (145668).

2^1543139 is an apocalyptic number.

1543139 is a deficient number, since it is larger than the sum of its proper divisors (204877).

1543139 is a wasteful number, since it uses less digits than its factorization.

1543139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 433 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 1543139 is about 1242.2314599140. The cubic root of 1543139 is about 115.5584432149.

The spelling of 1543139 in words is "one million, five hundred forty-three thousand, one hundred thirty-nine".