1320142 has 4 divisors (see below), whose sum is σ = 1980216. Its totient is φ = 660070.

The previous prime is 1320127. The next prime is 1320149. The reversal of 1320142 is 2410231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2410231 = 1213 ⋅1987.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330034 + ... + 330037.

It is an arithmetic number, because the mean of its divisors is an integer number (495054).

2^1320142 is an apocalyptic number.

1320142 is a deficient number, since it is larger than the sum of its proper divisors (660074).

1320142 is an equidigital number, since it uses as much as digits as its factorization.

1320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660073.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1320142 is about 1148.9743252136. The cubic root of 1320142 is about 109.7000644557.

Adding to 1320142 its reverse (2410231), we get a palindrome (3730373).

The spelling of 1320142 in words is "one million, three hundred twenty thousand, one hundred forty-two".