72405343 has 2 divisors, whose sum is σ = 72405344. Its totient is φ = 72405342.

The previous prime is 72405313. The next prime is 72405349. The reversal of 72405343 is 34350427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72405343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72405349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36202671 + 36202672.

It is an arithmetic number, because the mean of its divisors is an integer number (36202672).

Almost surely, 2^72405343 is an apocalyptic number.

72405343 is a deficient number, since it is larger than the sum of its proper divisors (1).

72405343 is an equidigital number, since it uses as much as digits as its factorization.

72405343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 72405343 is about 8509.1329170486. The cubic root of 72405343 is about 416.7959961909.

The spelling of 72405343 in words is "seventy-two million, four hundred five thousand, three hundred forty-three".