420413231 has 4 divisors (see below), whose sum is σ = 480472272. Its totient is φ = 360354192.

The previous prime is 420413219. The next prime is 420413237. The reversal of 420413231 is 132314024.

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 420413231 - 2¹⁰ = 420412207 is a prime.

It is a super-2 number, since 2×420413231² = 353494569599718722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420413237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30029510 + ... + 30029523.

It is an arithmetic number, because the mean of its divisors is an integer number (120118068).

Almost surely, 2^420413231 is an apocalyptic number.

420413231 is a deficient number, since it is larger than the sum of its proper divisors (60059041).

420413231 is an equidigital number, since it uses as much as digits as its factorization.

420413231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60059040.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 420413231 is about 20503.9808573847. The cubic root of 420413231 is about 749.1327641076.

Adding to 420413231 its reverse (132314024), we get a palindrome (552727255).

The spelling of 420413231 in words is "four hundred twenty million, four hundred thirteen thousand, two hundred thirty-one".