420827 has 8 divisors (see below), whose sum is σ = 466752. Its totient is φ = 376200.

The previous prime is 420811. The next prime is 420851. The reversal of 420827 is 728024.

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

It is not a de Polignac number, because 420827 - 2⁴ = 420811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 452 + ... + 1022.

It is an arithmetic number, because the mean of its divisors is an integer number (58344).

2⁴²⁰⁸²⁷ is an apocalyptic number.

420827 is a deficient number, since it is larger than the sum of its proper divisors (45925).

420827 is a wasteful number, since it uses less digits than its factorization.

420827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 420827 is about 648.7118004168. The cubic root of 420827 is about 74.9378448003.

The spelling of 420827 in words is "four hundred twenty thousand, eight hundred twenty-seven".