420955201 has 4 divisors (see below), whose sum is σ = 421857072. Its totient is φ = 420053332.

The previous prime is 420955163. The next prime is 420955211. The reversal of 420955201 is 102559024.

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 a de Polignac number, because none of the positive numbers 2^k-420955201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420955201.

It is not an unprimeable number, because it can be changed into a prime (420955211) 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, 450235 + ... + 451168.

It is an arithmetic number, because the mean of its divisors is an integer number (105464268).

Almost surely, 2^420955201 is an apocalyptic number.

It is an amenable number.

420955201 is a deficient number, since it is larger than the sum of its proper divisors (901871).

420955201 is an equidigital number, since it uses as much as digits as its factorization.

420955201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901870.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 420955201 is about 20517.1928148078. The cubic root of 420955201 is about 749.4545373160.

The spelling of 420955201 in words is "four hundred twenty million, nine hundred fifty-five thousand, two hundred one".