7947420203 has 4 divisors (see below), whose sum is σ = 7967239608. Its totient is φ = 7927600800.

The previous prime is 7947420191. The next prime is 7947420211. The reversal of 7947420203 is 3020247497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020247497 = 6833 ⋅442009.

It is a cyclic number.

It is not a de Polignac number, because 7947420203 - 2⁶ = 7947420139 is a prime.

It is a super-2 number, since 2×7947420203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7947440203) 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, 9909101 + ... + 9909902.

It is an arithmetic number, because the mean of its divisors is an integer number (1991809902).

Almost surely, 2^7947420203 is an apocalyptic number.

7947420203 is a deficient number, since it is larger than the sum of its proper divisors (19819405).

7947420203 is a wasteful number, since it uses less digits than its factorization.

7947420203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19819404.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 7947420203 is about 89148.3045436087. The cubic root of 7947420203 is about 1995.6087156173.

The spelling of 7947420203 in words is "seven billion, nine hundred forty-seven million, four hundred twenty thousand, two hundred three".