5442139 has 4 divisors (see below), whose sum is σ = 5462640. Its totient is φ = 5421640.

The previous prime is 5442121. The next prime is 5442149. The reversal of 5442139 is 9312445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9312445 = 5 ⋅1862489.

It is a cyclic number.

It is not a de Polignac number, because 5442139 - 2⁷ = 5442011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5442109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9847 + ... + 10384.

It is an arithmetic number, because the mean of its divisors is an integer number (1365660).

Almost surely, 2^5442139 is an apocalyptic number.

5442139 is a deficient number, since it is larger than the sum of its proper divisors (20501).

5442139 is a wasteful number, since it uses less digits than its factorization.

5442139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20500.

The product of its digits is 4320, while the sum is 28.

The square root of 5442139 is about 2332.8392572143. The cubic root of 5442139 is about 175.8962348919.

The spelling of 5442139 in words is "five million, four hundred forty-two thousand, one hundred thirty-nine".