420444113 has 8 divisors (see below), whose sum is σ = 425582760. Its totient is φ = 415324800.

The previous prime is 420444109. The next prime is 420444121. The reversal of 420444113 is 311444024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 161620369 + 258823744 = 12713^2 + 16088^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 420444113 - 2² = 420444109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420444133) 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 7 ways as a sum of consecutive naturals, for example, 41603 + ... + 50711.

It is an arithmetic number, because the mean of its divisors is an integer number (53197845).

Almost surely, 2^420444113 is an apocalyptic number.

It is an amenable number.

420444113 is a deficient number, since it is larger than the sum of its proper divisors (5138647).

420444113 is a wasteful number, since it uses less digits than its factorization.

420444113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 420444113 is about 20504.7339168300. The cubic root of 420444113 is about 749.1511064986.

Adding to 420444113 its reverse (311444024), we get a palindrome (731888137).

The spelling of 420444113 in words is "four hundred twenty million, four hundred forty-four thousand, one hundred thirteen".