1331242 has 12 divisors (see below), whose sum is σ = 2195298. Its totient is φ = 605000.

The previous prime is 1331227. The next prime is 1331243. The reversal of 1331242 is 2421331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 755161 + 576081 = 869^2 + 759^2 .

It is not an unprimeable number, because it can be changed into a prime (1331243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2509 + ... + 2992.

2^1331242 is an apocalyptic number.

1331242 is a deficient number, since it is larger than the sum of its proper divisors (864056).

1331242 is a wasteful number, since it uses less digits than its factorization.

1331242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525 (or 5514 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 1331242 is about 1153.7946091051. The cubic root of 1331242 is about 110.0066662627.

Adding to 1331242 its reverse (2421331), we get a palindrome (3752573).

The spelling of 1331242 in words is "one million, three hundred thirty-one thousand, two hundred forty-two".