4350021 has 8 divisors (see below), whose sum is σ = 6246240. Its totient is φ = 2676912.

The previous prime is 4349987. The next prime is 4350023. The reversal of 4350021 is 1200534.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4350021 - 2¹⁰ = 4348997 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4350023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55731 + ... + 55808.

It is an arithmetic number, because the mean of its divisors is an integer number (780780).

Almost surely, 2^4350021 is an apocalyptic number.

It is an amenable number.

4350021 is a deficient number, since it is larger than the sum of its proper divisors (1896219).

4350021 is a wasteful number, since it uses less digits than its factorization.

4350021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111555.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 4350021 is about 2085.6703958200. The cubic root of 4350021 is about 163.2414527895.

Adding to 4350021 its reverse (1200534), we get a palindrome (5550555).

The spelling of 4350021 in words is "four million, three hundred fifty thousand, twenty-one".