2132442421 has 2 divisors, whose sum is σ = 2132442422. Its totient is φ = 2132442420.

The previous prime is 2132442419. The next prime is 2132442427. The reversal of 2132442421 is 1242442312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1898780625 + 233661796 = 43575^2 + 15286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132442421 - 2¹ = 2132442419 is a prime.

Together with 2132442419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132442427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066221210 + 1066221211.

It is an arithmetic number, because the mean of its divisors is an integer number (1066221211).

Almost surely, 2^2132442421 is an apocalyptic number.

It is an amenable number.

2132442421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132442421 is an equidigital number, since it uses as much as digits as its factorization.

2132442421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 25.

The square root of 2132442421 is about 46178.3761191318. The cubic root of 2132442421 is about 1287.1399531892.

Adding to 2132442421 its reverse (1242442312), we get a palindrome (3374884733).

The spelling of 2132442421 in words is "two billion, one hundred thirty-two million, four hundred forty-two thousand, four hundred twenty-one".