420465 has 8 divisors (see below), whose sum is σ = 672768. Its totient is φ = 224240.

The previous prime is 420457. The next prime is 420467. The reversal of 420465 is 564024.

It is a happy number.

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

It is not a de Polignac number, because 420465 - 2³ = 420457 is a prime.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14001 + ... + 14030.

It is an arithmetic number, because the mean of its divisors is an integer number (84096).

2⁴²⁰⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

420465 is a deficient number, since it is larger than the sum of its proper divisors (252303).

420465 is a wasteful number, since it uses less digits than its factorization.

420465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28039.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420465 is about 648.4327258860. The cubic root of 420465 is about 74.9163511841.

Adding to 420465 its reverse (564024), we get a palindrome (984489).

The spelling of 420465 in words is "four hundred twenty thousand, four hundred sixty-five".