420027 has 4 divisors (see below), whose sum is σ = 560040. Its totient is φ = 280016.

The previous prime is 420001. The next prime is 420029. The reversal of 420027 is 720024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420027 - 2¹² = 415931 is a prime.

It is a D-number.

420027 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 419988 and 420015.

It is not an unprimeable number, because it can be changed into a prime (420029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 70002 + ... + 70007.

It is an arithmetic number, because the mean of its divisors is an integer number (140010).

2⁴²⁰⁰²⁷ is an apocalyptic number.

420027 is a deficient number, since it is larger than the sum of its proper divisors (140013).

420027 is a wasteful number, since it uses less digits than its factorization.

420027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140012.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 420027 is about 648.0949004583. The cubic root of 420027 is about 74.8903285962.

It can be divided in two parts, 4 and 20027, that multiplied together give a palindrome (80108).

The spelling of 420027 in words is "four hundred twenty thousand, twenty-seven", and thus it is an iban number.