420229 has 6 divisors (see below), whose sum is σ = 432326. Its totient is φ = 408360.

The previous prime is 420221. The next prime is 420241. The reversal of 420229 is 922024.

420229 = 26² + 27² + ... + 108².

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 248004 + 172225 = 498^2 + 415^2 .

It is not a de Polignac number, because 420229 - 2³ = 420221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5022 + ... + 5104.

2⁴²⁰²²⁹ is an apocalyptic number.

It is an amenable number.

420229 is a deficient number, since it is larger than the sum of its proper divisors (12097).

420229 is an frugal number, since it uses more digits than its factorization.

420229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 420229 is about 648.2507231003. The cubic root of 420229 is about 74.9023321276.

The spelling of 420229 in words is "four hundred twenty thousand, two hundred twenty-nine".