420200109 has 16 divisors (see below), whose sum is σ = 711450240. Its totient is φ = 240114240.

The previous prime is 420200093. The next prime is 420200113. The reversal of 420200109 is 901002024.

It is not a de Polignac number, because 420200109 - 2⁴ = 420200093 is a prime.

It is a super-2 number, since 2×420200109² = 353136263207223762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420200091 and 420200100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420200149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111452 + ... + 1111829.

It is an arithmetic number, because the mean of its divisors is an integer number (44465640).

Almost surely, 2^420200109 is an apocalyptic number.

It is an amenable number.

420200109 is a deficient number, since it is larger than the sum of its proper divisors (291250131).

420200109 is a wasteful number, since it uses less digits than its factorization.

420200109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223297 (or 2223291 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 420200109 is about 20498.7831102239. The cubic root of 420200109 is about 749.0061556128.

The spelling of 420200109 in words is "four hundred twenty million, two hundred thousand, one hundred nine".