2141421533 has 4 divisors (see below), whose sum is σ = 2142237468. Its totient is φ = 2140605600.

The previous prime is 2141421437. The next prime is 2141421551. The reversal of 2141421533 is 3351241412.

It is a happy number.

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 263672644 + 1877748889 = 16238^2 + 43333^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141421533 - 2¹² = 2141417437 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 (2141421553) 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, 404018 + ... + 409283.

It is an arithmetic number, because the mean of its divisors is an integer number (535559367).

Almost surely, 2^2141421533 is an apocalyptic number.

It is an amenable number.

2141421533 is a deficient number, since it is larger than the sum of its proper divisors (815935).

2141421533 is an equidigital number, since it uses as much as digits as its factorization.

2141421533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815934.

The product of its digits is 2880, while the sum is 26.

The square root of 2141421533 is about 46275.4960319174. The cubic root of 2141421533 is about 1288.9440175359.

Adding to 2141421533 its reverse (3351241412), we get a palindrome (5492662945).

The spelling of 2141421533 in words is "two billion, one hundred forty-one million, four hundred twenty-one thousand, five hundred thirty-three".