420003349 has 4 divisors (see below), whose sum is σ = 424161900. Its totient is φ = 415844800.

The previous prime is 420003347. The next prime is 420003431. The reversal of 420003349 is 943300024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 225540324 + 194463025 = 15018^2 + 13945^2 .

It is a cyclic number.

It is not a de Polignac number, because 420003349 - 2¹ = 420003347 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 (420003347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2079124 + ... + 2079325.

It is an arithmetic number, because the mean of its divisors is an integer number (106040475).

Almost surely, 2^420003349 is an apocalyptic number.

It is an amenable number.

420003349 is a deficient number, since it is larger than the sum of its proper divisors (4158551).

420003349 is a wasteful number, since it uses less digits than its factorization.

420003349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158550.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 420003349 is about 20493.9832389899. The cubic root of 420003349 is about 748.8892292113.

The spelling of 420003349 in words is "four hundred twenty million, three thousand, three hundred forty-nine".