420733 has 4 divisors (see below), whose sum is σ = 445500. Its totient is φ = 395968.

The previous prime is 420731. The next prime is 420737. The reversal of 420733 is 337024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 381924 + 38809 = 618^2 + 197^2 .

It is a cyclic number.

It is not a de Polignac number, because 420733 - 2¹ = 420731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12358 + ... + 12391.

It is an arithmetic number, because the mean of its divisors is an integer number (111375).

2⁴²⁰⁷³³ is an apocalyptic number.

It is an amenable number.

420733 is a deficient number, since it is larger than the sum of its proper divisors (24767).

420733 is a wasteful number, since it uses less digits than its factorization.

420733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24766.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 420733 is about 648.6393450909. The cubic root of 420733 is about 74.9322647702.

Adding to 420733 its reverse (337024), we get a palindrome (757757).

It can be divided in two parts, 4207 and 33, that multiplied together give a palindrome (138831).

The spelling of 420733 in words is "four hundred twenty thousand, seven hundred thirty-three".