1239213 has 4 divisors (see below), whose sum is σ = 1652288. Its totient is φ = 826140.

The previous prime is 1239197. The next prime is 1239223. The reversal of 1239213 is 3129321.

It is a happy number.

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 not a de Polignac number, because 1239213 - 2⁴ = 1239197 is a prime.

It is a D-number.

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 1239213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206533 + ... + 206538.

It is an arithmetic number, because the mean of its divisors is an integer number (413072).

2^1239213 is an apocalyptic number.

It is an amenable number.

1239213 is a deficient number, since it is larger than the sum of its proper divisors (413075).

1239213 is an equidigital number, since it uses as much as digits as its factorization.

1239213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413074.

The product of its digits is 324, while the sum is 21.

The square root of 1239213 is about 1113.1994430469. The cubic root of 1239213 is about 107.4109737061.

The spelling of 1239213 in words is "one million, two hundred thirty-nine thousand, two hundred thirteen".