7421212 has 6 divisors (see below), whose sum is σ = 12987128. Its totient is φ = 3710604.

The previous prime is 7421207. The next prime is 7421213. The reversal of 7421212 is 2121247.

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 7421212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927648 + ... + 927655.

Almost surely, 2^7421212 is an apocalyptic number.

It is an amenable number.

7421212 is a deficient number, since it is larger than the sum of its proper divisors (5565916).

7421212 is a wasteful number, since it uses less digits than its factorization.

7421212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855307 (or 1855305 counting only the distinct ones).

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

The square root of 7421212 is about 2724.1901548901. The cubic root of 7421212 is about 195.0555353547.

Adding to 7421212 its reverse (2121247), we get a palindrome (9542459).

The spelling of 7421212 in words is "seven million, four hundred twenty-one thousand, two hundred twelve".