1542289 has 4 divisors (see below), whose sum is σ = 1762624. Its totient is φ = 1321956.

The previous prime is 1542283. The next prime is 1542347. The reversal of 1542289 is 9822451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1542289.

It is not an unprimeable number, because it can be changed into a prime (1542283) 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, 110157 + ... + 110170.

It is an arithmetic number, because the mean of its divisors is an integer number (440656).

2^1542289 is an apocalyptic number.

It is an amenable number.

1542289 is a deficient number, since it is larger than the sum of its proper divisors (220335).

1542289 is an equidigital number, since it uses as much as digits as its factorization.

1542289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220334.

The product of its digits is 5760, while the sum is 31.

The square root of 1542289 is about 1241.8892865308. The cubic root of 1542289 is about 115.5372218133.

The spelling of 1542289 in words is "one million, five hundred forty-two thousand, two hundred eighty-nine".