420022001 has 4 divisors (see below), whose sum is σ = 480025152. Its totient is φ = 360018852.

The previous prime is 420021991. The next prime is 420022019. The reversal of 420022001 is 100220024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420022001 - 2²⁶ = 352913137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420022601) 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, 30001565 + ... + 30001578.

It is an arithmetic number, because the mean of its divisors is an integer number (120006288).

Almost surely, 2^420022001 is an apocalyptic number.

It is an amenable number.

420022001 is a deficient number, since it is larger than the sum of its proper divisors (60003151).

420022001 is an equidigital number, since it uses as much as digits as its factorization.

420022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60003150.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 420022001 is about 20494.4382943276. The cubic root of 420022001 is about 748.9003148968.

Adding to 420022001 its reverse (100220024), we get a palindrome (520242025).

The spelling of 420022001 in words is "four hundred twenty million, twenty-two thousand, one".