7220126 has 8 divisors (see below), whose sum is σ = 10967520. Its totient is φ = 3564288.

The previous prime is 7220123. The next prime is 7220131. The reversal of 7220126 is 6210227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7220098 and 7220107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22691 + ... + 23006.

It is an arithmetic number, because the mean of its divisors is an integer number (1370940).

Almost surely, 2^7220126 is an apocalyptic number.

7220126 is a deficient number, since it is larger than the sum of its proper divisors (3747394).

7220126 is a wasteful number, since it uses less digits than its factorization.

7220126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45778.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 7220126 is about 2687.0292145788. The cubic root of 7220126 is about 193.2776302729.

It can be divided in two parts, 72201 and 26, that added together give a palindrome (72227).

The spelling of 7220126 in words is "seven million, two hundred twenty thousand, one hundred twenty-six".