423215 has 16 divisors (see below), whose sum is σ = 580608. Its totient is φ = 293376.

The previous prime is 423209. The next prime is 423221. The reversal of 423215 is 512324.

It is an interprime number because it is at equal distance from previous prime (423209) and next prime (423221).

It is a cyclic number.

It is not a de Polignac number, because 423215 - 2¹⁸ = 161071 is a prime.

It is a super-2 number, since 2×423215² = 358221872450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423193 and 423202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (36288).

2⁴²³²¹⁵ is an apocalyptic number.

423215 is a deficient number, since it is larger than the sum of its proper divisors (157393).

423215 is a wasteful number, since it uses less digits than its factorization.

423215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418.

The product of its digits is 240, while the sum is 17.

The square root of 423215 is about 650.5497675044. The cubic root of 423215 is about 75.0793234816.

Adding to 423215 its reverse (512324), we get a palindrome (935539).

The spelling of 423215 in words is "four hundred twenty-three thousand, two hundred fifteen".