421131133 has 4 divisors (see below), whose sum is σ = 422651740. Its totient is φ = 419610528.

The previous prime is 421131101. The next prime is 421131149. The reversal of 421131133 is 331131124.

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 169052004 + 252079129 = 13002^2 + 15877^2 .

It is a cyclic number.

It is not a de Polignac number, because 421131133 - 2⁵ = 421131101 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 421131133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421131833) 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, 759888 + ... + 760441.

It is an arithmetic number, because the mean of its divisors is an integer number (105662935).

Almost surely, 2^421131133 is an apocalyptic number.

It is an amenable number.

421131133 is a deficient number, since it is larger than the sum of its proper divisors (1520607).

421131133 is a wasteful number, since it uses less digits than its factorization.

421131133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520606.

The product of its digits is 216, while the sum is 19.

The square root of 421131133 is about 20521.4797955703. The cubic root of 421131133 is about 749.5589305871.

Adding to 421131133 its reverse (331131124), we get a palindrome (752262257).

Subtracting from 421131133 its reverse (331131124), we obtain a palindrome (90000009).

It can be divided in two parts, 4211 and 31133, that added together give a square (35344 = 188²).

The spelling of 421131133 in words is "four hundred twenty-one million, one hundred thirty-one thousand, one hundred thirty-three".