7140223 has 4 divisors (see below), whose sum is σ = 7333240. Its totient is φ = 6947208.

The previous prime is 7140209. The next prime is 7140227. The reversal of 7140223 is 3220417.

7140223 = 57² + 58² + ... + 278².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220417 = 199 ⋅16183.

It is a cyclic number.

It is not a de Polignac number, because 7140223 - 2¹³ = 7132031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7140223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96453 + ... + 96526.

It is an arithmetic number, because the mean of its divisors is an integer number (1833310).

Almost surely, 2^7140223 is an apocalyptic number.

7140223 is a deficient number, since it is larger than the sum of its proper divisors (193017).

7140223 is a wasteful number, since it uses less digits than its factorization.

7140223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193016.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 7140223 is about 2672.1195706779. The cubic root of 7140223 is about 192.5620017292.

It can be divided in two parts, 714022 and 3, that added together give a square (714025 = 845²).

The spelling of 7140223 in words is "seven million, one hundred forty thousand, two hundred twenty-three".