3520423 has 4 divisors (see below), whose sum is σ = 3544200. Its totient is φ = 3496648.

The previous prime is 3520399. The next prime is 3520427. The reversal of 3520423 is 3240253.

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 3520423 - 2⁹ = 3519911 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 3520423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520427) 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, 11665 + ... + 11962.

It is an arithmetic number, because the mean of its divisors is an integer number (886050).

Almost surely, 2^3520423 is an apocalyptic number.

3520423 is a deficient number, since it is larger than the sum of its proper divisors (23777).

3520423 is a wasteful number, since it uses less digits than its factorization.

3520423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23776.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 3520423 is about 1876.2790304216. The cubic root of 3520423 is about 152.1241915534.

Adding to 3520423 its reverse (3240253), we get a palindrome (6760676).

The spelling of 3520423 in words is "three million, five hundred twenty thousand, four hundred twenty-three".