1320542 has 4 divisors (see below), whose sum is σ = 1980816. Its totient is φ = 660270.

The previous prime is 1320541. The next prime is 1320607. The reversal of 1320542 is 2450231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2450231 = 7 ⋅350033.

It is a self number, because there is not a number n which added to its sum of digits gives 1320542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330134 + ... + 330137.

It is an arithmetic number, because the mean of its divisors is an integer number (495204).

2^1320542 is an apocalyptic number.

1320542 is a deficient number, since it is larger than the sum of its proper divisors (660274).

1320542 is an equidigital number, since it uses as much as digits as its factorization.

1320542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660273.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1320542 is about 1149.1483803234. The cubic root of 1320542 is about 109.7111429596.

Adding to 1320542 its reverse (2450231), we get a palindrome (3770773).

The spelling of 1320542 in words is "one million, three hundred twenty thousand, five hundred forty-two".