333145421 has 4 divisors (see below), whose sum is σ = 380737632. Its totient is φ = 285553212.

The previous prime is 333145399. The next prime is 333145429. The reversal of 333145421 is 124541333.

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 not a de Polignac number, because 333145421 - 2¹⁸ = 332883277 is a prime.

It is a super-2 number, since 2×333145421² = 221971743066534482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333145429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23796095 + ... + 23796108.

It is an arithmetic number, because the mean of its divisors is an integer number (95184408).

Almost surely, 2^333145421 is an apocalyptic number.

It is an amenable number.

333145421 is a deficient number, since it is larger than the sum of its proper divisors (47592211).

333145421 is an equidigital number, since it uses as much as digits as its factorization.

333145421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47592210.

The product of its digits is 4320, while the sum is 26.

The square root of 333145421 is about 18252.2716668364. The cubic root of 333145421 is about 693.2309587247.

Adding to 333145421 its reverse (124541333), we get a palindrome (457686754).

The spelling of 333145421 in words is "three hundred thirty-three million, one hundred forty-five thousand, four hundred twenty-one".