421201133 has 8 divisors (see below), whose sum is σ = 440623800. Its totient is φ = 402105088.

The previous prime is 421201111. The next prime is 421201147. The reversal of 421201133 is 331102124.

It can be written as a sum of positive squares in 4 ways, for example, as 119727364 + 301473769 = 10942^2 + 17363^2 .

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 421201133 - 2⁸ = 421200877 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 (421201153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79016 + ... + 84177.

It is an arithmetic number, because the mean of its divisors is an integer number (55077975).

Almost surely, 2^421201133 is an apocalyptic number.

It is an amenable number.

421201133 is a deficient number, since it is larger than the sum of its proper divisors (19422667).

421201133 is a wasteful number, since it uses less digits than its factorization.

421201133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163311.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 421201133 is about 20523.1852547308. The cubic root of 421201133 is about 749.6004586008.

Adding to 421201133 its reverse (331102124), we get a palindrome (752303257).

Subtracting from 421201133 its reverse (331102124), we obtain a palindrome (90099009).

The spelling of 421201133 in words is "four hundred twenty-one million, two hundred one thousand, one hundred thirty-three".