2141832421 has 4 divisors (see below), whose sum is σ = 2145327052. Its totient is φ = 2138337792.

The previous prime is 2141832379. The next prime is 2141832461. The reversal of 2141832421 is 1242381412.

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 120340900 + 2021491521 = 10970^2 + 44961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141832421 - 2¹⁷ = 2141701349 is a prime.

It is a super-2 number, since 2×2141832421² = 9174892239293442482, which contains 22 as substring.

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 2141832421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141832461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746396 + ... + 1747621.

It is an arithmetic number, because the mean of its divisors is an integer number (536331763).

Almost surely, 2^2141832421 is an apocalyptic number.

It is an amenable number.

2141832421 is a deficient number, since it is larger than the sum of its proper divisors (3494631).

2141832421 is an equidigital number, since it uses as much as digits as its factorization.

2141832421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494630.

The product of its digits is 3072, while the sum is 28.

The square root of 2141832421 is about 46279.9354040171. The cubic root of 2141832421 is about 1289.0264515253.

The spelling of 2141832421 in words is "two billion, one hundred forty-one million, eight hundred thirty-two thousand, four hundred twenty-one".