2134342421 has 2 divisors, whose sum is σ = 2134342422. Its totient is φ = 2134342420.

The previous prime is 2134342387. The next prime is 2134342451. The reversal of 2134342421 is 1242434312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2107819921 + 26522500 = 45911^2 + 5150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134342421 - 2²² = 2130148117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134342451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067171210 + 1067171211.

It is an arithmetic number, because the mean of its divisors is an integer number (1067171211).

Almost surely, 2^2134342421 is an apocalyptic number.

It is an amenable number.

2134342421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134342421 is an equidigital number, since it uses as much as digits as its factorization.

2134342421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 26.

The square root of 2134342421 is about 46198.9439381465. The cubic root of 2134342421 is about 1287.5221190280.

Adding to 2134342421 its reverse (1242434312), we get a palindrome (3376776733).

The spelling of 2134342421 in words is "two billion, one hundred thirty-four million, three hundred forty-two thousand, four hundred twenty-one".