7213442 has 4 divisors (see below), whose sum is σ = 10820166. Its totient is φ = 3606720.

The previous prime is 7213441. The next prime is 7213469. The reversal of 7213442 is 2443127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443127 = 1109 ⋅2203.

It can be written as a sum of positive squares in only one way, i.e., 6255001 + 958441 = 2501^2 + 979^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1803359 + ... + 1803362.

Almost surely, 2^7213442 is an apocalyptic number.

7213442 is a deficient number, since it is larger than the sum of its proper divisors (3606724).

7213442 is a wasteful number, since it uses less digits than its factorization.

7213442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606723.

The product of its digits is 1344, while the sum is 23.

The square root of 7213442 is about 2685.7851738365. The cubic root of 7213442 is about 193.2179698860.

Adding to 7213442 its reverse (2443127), we get a palindrome (9656569).

The spelling of 7213442 in words is "seven million, two hundred thirteen thousand, four hundred forty-two".