7121422 has 32 divisors (see below), whose sum is σ = 13457664. Its totient is φ = 2745600.

The previous prime is 7121417. The next prime is 7121437. The reversal of 7121422 is 2241217.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7121422.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19998 + ... + 20350.

It is an arithmetic number, because the mean of its divisors is an integer number (420552).

Almost surely, 2^7121422 is an apocalyptic number.

7121422 is a deficient number, since it is larger than the sum of its proper divisors (6336242).

7121422 is a wasteful number, since it uses less digits than its factorization.

7121422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its digits is 224, while the sum is 19.

The square root of 7121422 is about 2668.5992580378. The cubic root of 7121422 is about 192.3928407915.

Adding to 7121422 its reverse (2241217), we get a palindrome (9362639).

The spelling of 7121422 in words is "seven million, one hundred twenty-one thousand, four hundred twenty-two".