2142641 has 2 divisors, whose sum is σ = 2142642. Its totient is φ = 2142640.

The previous prime is 2142601. The next prime is 2142643. The reversal of 2142641 is 1462412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1700416 + 442225 = 1304^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142641 - 2⁶ = 2142577 is a prime.

Together with 2142643, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071320 + 1071321.

It is an arithmetic number, because the mean of its divisors is an integer number (1071321).

2^2142641 is an apocalyptic number.

It is an amenable number.

2142641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142641 is an equidigital number, since it uses as much as digits as its factorization.

2142641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

The square root of 2142641 is about 1463.7762807205. The cubic root of 2142641 is about 128.9188641087.

The spelling of 2142641 in words is "two million, one hundred forty-two thousand, six hundred forty-one".