420469 has 6 divisors (see below), whose sum is σ = 489174. Its totient is φ = 360360.

The previous prime is 420467. The next prime is 420479. The reversal of 420469 is 964024.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 207025 = 462^2 + 455^2 .

It is not a de Polignac number, because 420469 - 2¹ = 420467 is a prime.

It is a super-2 number, since 2×420469² = 353588359922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4242 + ... + 4339.

It is an arithmetic number, because the mean of its divisors is an integer number (81529).

2⁴²⁰⁴⁶⁹ is an apocalyptic number.

420469 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

420469 is a deficient number, since it is larger than the sum of its proper divisors (68705).

420469 is an equidigital number, since it uses as much as digits as its factorization.

420469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595 (or 8588 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 420469 is about 648.4358102388. The cubic root of 420469 is about 74.9165887500.

The spelling of 420469 in words is "four hundred twenty thousand, four hundred sixty-nine".