7420312730 has 8 divisors (see below), whose sum is σ = 13356562932. Its totient is φ = 2968125088.

The previous prime is 7420312727. The next prime is 7420312751. The reversal of 7420312730 is 372130247.

It can be written as a sum of positive squares in 2 ways, for example, as 6441186049 + 979126681 = 80257^2 + 31291^2 .

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

It is a super-2 number, since 2×7420312730² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7420312693 and 7420312702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371015627 + ... + 371015646.

Almost surely, 2^7420312730 is an apocalyptic number.

7420312730 is a deficient number, since it is larger than the sum of its proper divisors (5936250202).

7420312730 is a wasteful number, since it uses less digits than its factorization.

7420312730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742031280.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 7420312730 is about 86141.2371051171. The cubic root of 7420312730 is about 1950.4765637765.

Adding to 7420312730 its reverse (372130247), we get a palindrome (7792442977).

The spelling of 7420312730 in words is "seven billion, four hundred twenty million, three hundred twelve thousand, seven hundred thirty".