420045001 has 4 divisors (see below), whose sum is σ = 420290512. Its totient is φ = 419799492.

The previous prime is 420044983. The next prime is 420045011. The reversal of 420045001 is 100540024.

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 420045001 - 2¹³ = 420036809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420045011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120171 + ... + 123616.

It is an arithmetic number, because the mean of its divisors is an integer number (105072628).

Almost surely, 2^420045001 is an apocalyptic number.

It is an amenable number.

420045001 is a deficient number, since it is larger than the sum of its proper divisors (245511).

420045001 is a wasteful number, since it uses less digits than its factorization.

420045001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245510.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 420045001 is about 20494.9994144913. Note that the first 3 decimals coincide. The cubic root of 420045001 is about 748.9139843338.

Adding to 420045001 its reverse (100540024), we get a palindrome (520585025).

The spelling of 420045001 in words is "four hundred twenty million, forty-five thousand, one".