420969001 has 4 divisors (see below), whose sum is σ = 421024212. Its totient is φ = 420913792.

The previous prime is 420968987. The next prime is 420969007. The reversal of 420969001 is 100969024.

It is a happy number.

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 129413376 + 291555625 = 11376^2 + 17075^2 .

It is a cyclic number.

It is not a de Polignac number, because 420969001 - 2⁵ = 420968969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420969007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13900 + ... + 32173.

It is an arithmetic number, because the mean of its divisors is an integer number (105256053).

Almost surely, 2^420969001 is an apocalyptic number.

It is an amenable number.

420969001 is a deficient number, since it is larger than the sum of its proper divisors (55211).

420969001 is an equidigital number, since it uses as much as digits as its factorization.

420969001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55210.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 420969001 is about 20517.5291153686. The cubic root of 420969001 is about 749.4627269124.

The spelling of 420969001 in words is "four hundred twenty million, nine hundred sixty-nine thousand, one".