7143505405 has 4 divisors (see below), whose sum is σ = 8572206492. Its totient is φ = 5714804320.

The previous prime is 7143505403. The next prime is 7143505409. The reversal of 7143505405 is 5045053417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5045053417 = 37313 ⋅135209.

It can be written as a sum of positive squares in 2 ways, for example, as 814189156 + 6329316249 = 28534^2 + 79557^2 .

It is not a de Polignac number, because 7143505405 - 2¹ = 7143505403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7143505403) 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, 714350536 + ... + 714350545.

It is an arithmetic number, because the mean of its divisors is an integer number (2143051623).

Almost surely, 2^7143505405 is an apocalyptic number.

It is an amenable number.

7143505405 is a deficient number, since it is larger than the sum of its proper divisors (1428701087).

7143505405 is a wasteful number, since it uses less digits than its factorization.

7143505405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428701086.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 7143505405 is about 84519.2605563963. The cubic root of 7143505405 is about 1925.9150452606.

The spelling of 7143505405 in words is "seven billion, one hundred forty-three million, five hundred five thousand, four hundred five".