1442539 has 4 divisors (see below), whose sum is σ = 1648624. Its totient is φ = 1236456.

The previous prime is 1442531. The next prime is 1442549. The reversal of 1442539 is 9352441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1442539 - 2³ = 1442531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103032 + ... + 103045.

It is an arithmetic number, because the mean of its divisors is an integer number (412156).

2^1442539 is an apocalyptic number.

1442539 is a deficient number, since it is larger than the sum of its proper divisors (206085).

1442539 is an equidigital number, since it uses as much as digits as its factorization.

1442539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206084.

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

The square root of 1442539 is about 1201.0574507491. The cubic root of 1442539 is about 112.9906536766.

The spelling of 1442539 in words is "one million, four hundred forty-two thousand, five hundred thirty-nine".