420443413 has 8 divisors (see below), whose sum is σ = 453090456. Its totient is φ = 387840000.

The previous prime is 420443407. The next prime is 420443417. The reversal of 420443413 is 314344024.

It can be written as a sum of positive squares in 4 ways, for example, as 13089924 + 407353489 = 3618^2 + 20183^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420443413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420443417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10713 + ... + 30913.

It is an arithmetic number, because the mean of its divisors is an integer number (56636307).

Almost surely, 2^420443413 is an apocalyptic number.

It is an amenable number.

420443413 is a deficient number, since it is larger than the sum of its proper divisors (32647043).

420443413 is a wasteful number, since it uses less digits than its factorization.

420443413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21815.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 420443413 is about 20504.7168475939. The cubic root of 420443413 is about 749.1506907429.

Adding to 420443413 its reverse (314344024), we get a palindrome (734787437).

The spelling of 420443413 in words is "four hundred twenty million, four hundred forty-three thousand, four hundred thirteen".