420015 has 8 divisors (see below), whose sum is σ = 672048. Its totient is φ = 224000.

The previous prime is 420001. The next prime is 420029. The reversal of 420015 is 510024.

420015 = T₃₀₁ + T₃₀₂ + ... + T₃₀₉.

It is an interprime number because it is at equal distance from previous prime (420001) and next prime (420029).

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

It is not a de Polignac number, because 420015 - 2⁴ = 419999 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420015.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13986 + ... + 14015.

It is an arithmetic number, because the mean of its divisors is an integer number (84006).

2⁴²⁰⁰¹⁵ is an apocalyptic number.

420015 is a deficient number, since it is larger than the sum of its proper divisors (252033).

420015 is a wasteful number, since it uses less digits than its factorization.

420015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28009.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 420015 is about 648.0856424887. The cubic root of 420015 is about 74.8896153940.

Adding to 420015 its reverse (510024), we get a palindrome (930039).

Subtracting 420015 from its reverse (510024), we obtain a palindrome (90009).

The spelling of 420015 in words is "four hundred twenty thousand, fifteen".