420231 has 8 divisors (see below), whose sum is σ = 640384. Its totient is φ = 240120.

The previous prime is 420221. The next prime is 420241. The reversal of 420231 is 132024.

420231 = T₃₄₃ + T₃₄₄ + ... + T₃₄₉.

It is an interprime number because it is at equal distance from previous prime (420221) and next prime (420241).

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

It is not a de Polignac number, because 420231 - 2⁷ = 420103 is a prime.

It is a super-2 number, since 2×420231² = 353188186722, which contains 22 as substring.

It is a Duffinian number.

420231 is a modest number, since divided by 231 gives 42 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420221) 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, 9985 + ... + 10026.

It is an arithmetic number, because the mean of its divisors is an integer number (80048).

2⁴²⁰²³¹ is an apocalyptic number.

420231 is a deficient number, since it is larger than the sum of its proper divisors (220153).

420231 is a wasteful number, since it uses less digits than its factorization.

420231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 420231 is about 648.2522657114. The cubic root of 420231 is about 74.9024509552.

Adding to 420231 its reverse (132024), we get a palindrome (552255).

It can be divided in two parts, 42023 and 1, that added together give a palindrome (42024).

The spelling of 420231 in words is "four hundred twenty thousand, two hundred thirty-one".