1213142 has 12 divisors (see below), whose sum is σ = 2116980. Its totient is φ = 519876.

The previous prime is 1213141. The next prime is 1213151. The reversal of 1213142 is 2413121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6092 + ... + 6287.

It is an arithmetic number, because the mean of its divisors is an integer number (176415).

2^1213142 is an apocalyptic number.

1213142 is a deficient number, since it is larger than the sum of its proper divisors (903838).

1213142 is a wasteful number, since it uses less digits than its factorization.

1213142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12395 (or 12388 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 1213142 is about 1101.4272558821. The cubic root of 1213142 is about 106.6523787286.

Adding to 1213142 its reverse (2413121), we get a palindrome (3626263).

The spelling of 1213142 in words is "one million, two hundred thirteen thousand, one hundred forty-two".