420415 has 8 divisors (see below), whose sum is σ = 515520. Its totient is φ = 328992.

The previous prime is 420397. The next prime is 420419. The reversal of 420415 is 514024.

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

It is a cyclic number.

It is not a de Polignac number, because 420415 - 2⁵ = 420383 is a prime.

It is an Ulam number.

420415 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420419) 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, 660 + ... + 1129.

It is an arithmetic number, because the mean of its divisors is an integer number (64440).

2⁴²⁰⁴¹⁵ is an apocalyptic number.

420415 is a deficient number, since it is larger than the sum of its proper divisors (95105).

420415 is a wasteful number, since it uses less digits than its factorization.

420415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 420415 is about 648.3941702391. The cubic root of 420415 is about 74.9133814831.

Adding to 420415 its reverse (514024), we get a palindrome (934439).

The spelling of 420415 in words is "four hundred twenty thousand, four hundred fifteen".