7212418 has 4 divisors (see below), whose sum is σ = 10818630. Its totient is φ = 3606208.

The previous prime is 7212397. The next prime is 7212487. The reversal of 7212418 is 8142127.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6285049 + 927369 = 2507^2 + 963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7212392 and 7212401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1803103 + ... + 1803106.

Almost surely, 2^7212418 is an apocalyptic number.

7212418 is a deficient number, since it is larger than the sum of its proper divisors (3606212).

7212418 is a wasteful number, since it uses less digits than its factorization.

7212418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3606211.

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

The square root of 7212418 is about 2685.5945338044. The cubic root of 7212418 is about 193.2088265596.

The spelling of 7212418 in words is "seven million, two hundred twelve thousand, four hundred eighteen".