420101205 has 16 divisors (see below), whose sum is σ = 683182464. Its totient is φ = 220380480.

The previous prime is 420101197. The next prime is 420101239. The reversal of 420101205 is 502101024.

It is not a de Polignac number, because 420101205 - 2³ = 420101197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228649 + ... + 230478.

It is an arithmetic number, because the mean of its divisors is an integer number (42698904).

Almost surely, 2^420101205 is an apocalyptic number.

It is an amenable number.

420101205 is a deficient number, since it is larger than the sum of its proper divisors (263081259).

420101205 is a wasteful number, since it uses less digits than its factorization.

420101205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459196.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 420101205 is about 20496.3705323650. The cubic root of 420101205 is about 748.9473855839.

Adding to 420101205 its reverse (502101024), we get a palindrome (922202229).

The spelling of 420101205 in words is "four hundred twenty million, one hundred one thousand, two hundred five".