420244133 has 8 divisors (see below), whose sum is σ = 439042680. Its totient is φ = 401732800.

The previous prime is 420244127. The next prime is 420244151. The reversal of 420244133 is 331442024.

It can be written as a sum of positive squares in 4 ways, for example, as 50951044 + 369293089 = 7138^2 + 19217^2 .

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 420244133 - 2⁸ = 420243877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420244099 and 420244108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420240133) 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 7 ways as a sum of consecutive naturals, for example, 68810 + ... + 74667.

It is an arithmetic number, because the mean of its divisors is an integer number (54880335).

Almost surely, 2^420244133 is an apocalyptic number.

It is an amenable number.

420244133 is a deficient number, since it is larger than the sum of its proper divisors (18798547).

420244133 is a wasteful number, since it uses less digits than its factorization.

420244133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143607.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 420244133 is about 20499.8569019396. The cubic root of 420244133 is about 749.0323122739.

Adding to 420244133 its reverse (331442024), we get a palindrome (751686157).

The spelling of 420244133 in words is "four hundred twenty million, two hundred forty-four thousand, one hundred thirty-three".