420020233 has 4 divisors (see below), whose sum is σ = 427139280. Its totient is φ = 412901188.

The previous prime is 420020231. The next prime is 420020243. The reversal of 420020233 is 332020024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420020233 - 2¹ = 420020231 is a prime.

It is a super-2 number, since 2×420020233² = 352833992258748578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420020231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3559435 + ... + 3559552.

It is an arithmetic number, because the mean of its divisors is an integer number (106784820).

Almost surely, 2^420020233 is an apocalyptic number.

It is an amenable number.

420020233 is a deficient number, since it is larger than the sum of its proper divisors (7119047).

420020233 is an equidigital number, since it uses as much as digits as its factorization.

420020233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119046.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 420020233 is about 20494.3951606287. The cubic root of 420020233 is about 748.8992641125.

Adding to 420020233 its reverse (332020024), we get a palindrome (752040257).

The spelling of 420020233 in words is "four hundred twenty million, twenty thousand, two hundred thirty-three".