7243921543 has 2 divisors, whose sum is σ = 7243921544. Its totient is φ = 7243921542.

The previous prime is 7243921523. The next prime is 7243921549. The reversal of 7243921543 is 3451293427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7243921543 - 2²¹ = 7241824391 is a prime.

It is a super-2 number, since 2×7243921543² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7243921496 and 7243921505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7243921549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621960771 + 3621960772.

It is an arithmetic number, because the mean of its divisors is an integer number (3621960772).

Almost surely, 2^7243921543 is an apocalyptic number.

7243921543 is a deficient number, since it is larger than the sum of its proper divisors (1).

7243921543 is an equidigital number, since it uses as much as digits as its factorization.

7243921543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 7243921543 is about 85111.2304164380. The cubic root of 7243921543 is about 1934.8972735117.

The spelling of 7243921543 in words is "seven billion, two hundred forty-three million, nine hundred twenty-one thousand, five hundred forty-three".