420100133 has 4 divisors (see below), whose sum is σ = 420153888. Its totient is φ = 420046380.

The previous prime is 420100103. The next prime is 420100159. The reversal of 420100133 is 331001024.

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 420100133 - 2⁸ = 420099877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420100103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12641 + ... + 31622.

It is an arithmetic number, because the mean of its divisors is an integer number (105038472).

Almost surely, 2^420100133 is an apocalyptic number.

It is an amenable number.

420100133 is a deficient number, since it is larger than the sum of its proper divisors (53755).

420100133 is an equidigital number, since it uses as much as digits as its factorization.

420100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53754.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 420100133 is about 20496.3443813769. The cubic root of 420100133 is about 748.9467485372.

Adding to 420100133 its reverse (331001024), we get a palindrome (751101157).

The spelling of 420100133 in words is "four hundred twenty million, one hundred thousand, one hundred thirty-three".