420944605 has 8 divisors (see below), whose sum is σ = 506583000. Its totient is φ = 335789376.

The previous prime is 420944569. The next prime is 420944609. The reversal of 420944605 is 506449024.

It can be written as a sum of positive squares in 4 ways, for example, as 5885476 + 415059129 = 2426^2 + 20373^2 .

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 420944605 - 2⁹ = 420944093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420944609) 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, 118870 + ... + 122359.

It is an arithmetic number, because the mean of its divisors is an integer number (63322875).

Almost surely, 2^420944605 is an apocalyptic number.

It is an amenable number.

420944605 is a deficient number, since it is larger than the sum of its proper divisors (85638395).

420944605 is a wasteful number, since it uses less digits than its factorization.

420944605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241583.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 420944605 is about 20516.9345907229. The cubic root of 420944605 is about 749.4482490088.

The spelling of 420944605 in words is "four hundred twenty million, nine hundred forty-four thousand, six hundred five".