7420530 has 64 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 1787136.

The previous prime is 7420529. The next prime is 7420531. The reversal of 7420530 is 350247.

It is a happy number.

7420530 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7420529) and next prime (7420531).

It is a junction number, because it is equal to n+sod(n) for n = 7420497 and 7420506.

It is not an unprimeable number, because it can be changed into a prime (7420531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20491 + ... + 20849.

It is an arithmetic number, because the mean of its divisors is an integer number (306180).

Almost surely, 2^7420530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7420530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9797760).

7420530 is an abundant number, since it is smaller than the sum of its proper divisors (12174990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7420530 is a wasteful number, since it uses less digits than its factorization.

7420530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 7420530 is about 2724.0649771986. The cubic root of 7420530 is about 195.0495600526.

Adding to 7420530 its reverse (350247), we get a palindrome (7770777).

The spelling of 7420530 in words is "seven million, four hundred twenty thousand, five hundred thirty".