420545201 has 8 divisors (see below), whose sum is σ = 448535880. Its totient is φ = 392915968.

The previous prime is 420545173. The next prime is 420545231. The reversal of 420545201 is 102545024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 190992400 + 229552801 = 13820^2 + 15151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-420545201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420545231) 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, 87956 + ... + 92613.

It is an arithmetic number, because the mean of its divisors is an integer number (56066985).

Almost surely, 2^420545201 is an apocalyptic number.

It is an amenable number.

420545201 is a deficient number, since it is larger than the sum of its proper divisors (27990679).

420545201 is a wasteful number, since it uses less digits than its factorization.

420545201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180723.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 420545201 is about 20507.1987604353. The cubic root of 420545201 is about 749.2111415236.

The spelling of 420545201 in words is "four hundred twenty million, five hundred forty-five thousand, two hundred one".