420440333 has 8 divisors (see below), whose sum is σ = 429889152. Its totient is φ = 411012576.

The previous prime is 420440329. The next prime is 420440357. The reversal of 420440333 is 333044024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 420440333 - 2² = 420440329 is a prime.

It is a super-2 number, since 2×420440333² = 353540147226301778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420440299 and 420440308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420440393) 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, 39266 + ... + 48812.

It is an arithmetic number, because the mean of its divisors is an integer number (53736144).

Almost surely, 2^420440333 is an apocalyptic number.

It is an amenable number.

420440333 is a deficient number, since it is larger than the sum of its proper divisors (9448819).

420440333 is an equidigital number, since it uses as much as digits as its factorization.

420440333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 420440333 is about 20504.6417427859. The cubic root of 420440333 is about 749.1488614125.

Adding to 420440333 its reverse (333044024), we get a palindrome (753484357).

The spelling of 420440333 in words is "four hundred twenty million, four hundred forty thousand, three hundred thirty-three".