420333273 has 16 divisors (see below), whose sum is σ = 623101440. Its totient is φ = 280048752.

The previous prime is 420333241. The next prime is 420333293. The reversal of 420333273 is 372333024.

It is a happy number.

It is not a de Polignac number, because 420333273 - 2⁵ = 420333241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (420333293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51640 + ... + 59222.

It is an arithmetic number, because the mean of its divisors is an integer number (38943840).

Almost surely, 2^420333273 is an apocalyptic number.

It is an amenable number.

420333273 is a deficient number, since it is larger than the sum of its proper divisors (202768167).

420333273 is a wasteful number, since it uses less digits than its factorization.

420333273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9645 (or 9639 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 27.

The square root of 420333273 is about 20502.0309481768. The cubic root of 420333273 is about 749.0852688094.

Adding to 420333273 its reverse (372333024), we get a palindrome (792666297).

The spelling of 420333273 in words is "four hundred twenty million, three hundred thirty-three thousand, two hundred seventy-three".