420369 has 4 divisors (see below), whose sum is σ = 560496. Its totient is φ = 280244.

The previous prime is 420367. The next prime is 420383. The reversal of 420369 is 963024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420369 - 2¹ = 420367 is a prime.

It is a super-2 number, since 2×420369² = 353420192322, which contains 22 as substring.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420369.

It is not an unprimeable number, because it can be changed into a prime (420361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70059 + ... + 70064.

It is an arithmetic number, because the mean of its divisors is an integer number (140124).

2⁴²⁰³⁶⁹ is an apocalyptic number.

It is an amenable number.

420369 is a deficient number, since it is larger than the sum of its proper divisors (140127).

420369 is a wasteful number, since it uses less digits than its factorization.

420369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140126.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 420369 is about 648.3586970189. The cubic root of 420369 is about 74.9106491502.

The spelling of 420369 in words is "four hundred twenty thousand, three hundred sixty-nine".