7440520343 has 4 divisors (see below), whose sum is σ = 7697090040. Its totient is φ = 7183950648.

The previous prime is 7440520333. The next prime is 7440520349. The reversal of 7440520343 is 3430250447.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7440520343 - 2¹⁶ = 7440454807 is a prime.

It is a super-2 number, since 2×7440520343² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440520349) 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, 128284805 + ... + 128284862.

It is an arithmetic number, because the mean of its divisors is an integer number (1924272510).

Almost surely, 2^7440520343 is an apocalyptic number.

7440520343 is a deficient number, since it is larger than the sum of its proper divisors (256569697).

7440520343 is a wasteful number, since it uses less digits than its factorization.

7440520343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256569696.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 7440520343 is about 86258.4508497573. The cubic root of 7440520343 is about 1952.2455256386.

The spelling of 7440520343 in words is "seven billion, four hundred forty million, five hundred twenty thousand, three hundred forty-three".