2142241 has 2 divisors, whose sum is σ = 2142242. Its totient is φ = 2142240.

The previous prime is 2142229. The next prime is 2142251. The reversal of 2142241 is 1422412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 1008016 = 1065^2 + 1004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142241 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071120 + 1071121.

It is an arithmetic number, because the mean of its divisors is an integer number (1071121).

2^2142241 is an apocalyptic number.

It is an amenable number.

2142241 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142241 is an equidigital number, since it uses as much as digits as its factorization.

2142241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128, while the sum is 16.

The square root of 2142241 is about 1463.6396414418. The cubic root of 2142241 is about 128.9108411821.

Adding to 2142241 its reverse (1422412), we get a palindrome (3564653).

It can be divided in two parts, 2 and 142241, that multiplied together give a palindrome (284482).

The spelling of 2142241 in words is "two million, one hundred forty-two thousand, two hundred forty-one".