1421533533 has 16 divisors (see below), whose sum is σ = 2171615360. Its totient is φ = 810254016.

The previous prime is 1421533441. The next prime is 1421533549. The reversal of 1421533533 is 3353351241.

It is not a de Polignac number, because 1421533533 - 2⁸ = 1421533277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421533533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421533133) 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 15 ways as a sum of consecutive naturals, for example, 76918 + ... + 93591.

It is an arithmetic number, because the mean of its divisors is an integer number (135725960).

Almost surely, 2^1421533533 is an apocalyptic number.

It is an amenable number.

1421533533 is a deficient number, since it is larger than the sum of its proper divisors (750081827).

1421533533 is a wasteful number, since it uses less digits than its factorization.

1421533533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170916.

The product of its digits is 16200, while the sum is 30.

The square root of 1421533533 is about 37703.2297422913. The cubic root of 1421533533 is about 1124.3953380785.

Adding to 1421533533 its reverse (3353351241), we get a palindrome (4774884774).

The spelling of 1421533533 in words is "one billion, four hundred twenty-one million, five hundred thirty-three thousand, five hundred thirty-three".