421234133 has 4 divisors (see below), whose sum is σ = 421454208. Its totient is φ = 421014060.

The previous prime is 421234127. The next prime is 421234157. The reversal of 421234133 is 331432124.

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 421234133 - 2¹² = 421230037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421234099 and 421234108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421234433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107141 + ... + 111002.

It is an arithmetic number, because the mean of its divisors is an integer number (105363552).

Almost surely, 2^421234133 is an apocalyptic number.

It is an amenable number.

421234133 is a deficient number, since it is larger than the sum of its proper divisors (220075).

421234133 is a wasteful number, since it uses less digits than its factorization.

421234133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220074.

The product of its digits is 1728, while the sum is 23.

The square root of 421234133 is about 20523.9892077539. The cubic root of 421234133 is about 749.6200344971.

Adding to 421234133 its reverse (331432124), we get a palindrome (752666257).

The spelling of 421234133 in words is "four hundred twenty-one million, two hundred thirty-four thousand, one hundred thirty-three".