420380 has 12 divisors (see below), whose sum is σ = 882840. Its totient is φ = 168144.

The previous prime is 420367. The next prime is 420383. The reversal of 420380 is 83024.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420380.

It is not an unprimeable number, because it can be changed into a prime (420383) by changing a digit.

420380 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10490 + ... + 10529.

It is an arithmetic number, because the mean of its divisors is an integer number (73570).

2⁴²⁰³⁸⁰ is an apocalyptic number.

It is an amenable number.

420380 is an abundant number, since it is smaller than the sum of its proper divisors (462460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420380 is a wasteful number, since it uses less digits than its factorization.

420380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028 (or 21026 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 420380 is about 648.3671799220. The cubic root of 420380 is about 74.9113025523.

The spelling of 420380 in words is "four hundred twenty thousand, three hundred eighty".