7420712730 has 32 divisors (see below), whose sum is σ = 18384219648. Its totient is φ = 1915022400.

The previous prime is 7420712729. The next prime is 7420712779. The reversal of 7420712730 is 372170247.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7420712691 and 7420712700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3988701 + ... + 3990560.

It is an arithmetic number, because the mean of its divisors is an integer number (574506864).

Almost surely, 2^7420712730 is an apocalyptic number.

7420712730 is an abundant number, since it is smaller than the sum of its proper divisors (10963506918).

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

7420712730 is a wasteful number, since it uses less digits than its factorization.

7420712730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979302.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 7420712730 is about 86143.5588422025. The cubic root of 7420712730 is about 1950.5116106645.

Adding to 7420712730 its reverse (372170247), we get a palindrome (7792882977).

The spelling of 7420712730 in words is "seven billion, four hundred twenty million, seven hundred twelve thousand, seven hundred thirty".