7211842 has 24 divisors (see below), whose sum is σ = 12597228. Its totient is φ = 3083520.

The previous prime is 7211839. The next prime is 7211843. The reversal of 7211842 is 2481127.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7027801 + 184041 = 2651^2 + 429^2 .

It is not an unprimeable number, because it can be changed into a prime (7211843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3238 + ... + 4990.

Almost surely, 2^7211842 is an apocalyptic number.

7211842 is a deficient number, since it is larger than the sum of its proper divisors (5385386).

7211842 is a wasteful number, since it uses less digits than its factorization.

7211842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794 (or 1783 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 7211842 is about 2685.4872928390. The cubic root of 7211842 is about 193.2036830582.

Adding to 7211842 its reverse (2481127), we get a palindrome (9692969).

The spelling of 7211842 in words is "seven million, two hundred eleven thousand, eight hundred forty-two".