2144302421 has 2 divisors, whose sum is σ = 2144302422. Its totient is φ = 2144302420.

The previous prime is 2144302379. The next prime is 2144302441. The reversal of 2144302421 is 1242034412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1904362321 + 239940100 = 43639^2 + 15490^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144302421 - 2⁶ = 2144302357 is a prime.

It is a super-2 number, since 2×2144302421² = 9196065745412922482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144302441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072151210 + 1072151211.

It is an arithmetic number, because the mean of its divisors is an integer number (1072151211).

Almost surely, 2^2144302421 is an apocalyptic number.

It is an amenable number.

2144302421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144302421 is an equidigital number, since it uses as much as digits as its factorization.

2144302421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2144302421 is about 46306.6131454245. The cubic root of 2144302421 is about 1289.5217707325.

Adding to 2144302421 its reverse (1242034412), we get a palindrome (3386336833).

The spelling of 2144302421 in words is "two billion, one hundred forty-four million, three hundred two thousand, four hundred twenty-one".