734134021 has 2 divisors, whose sum is σ = 734134022. Its totient is φ = 734134020.

The previous prime is 734134019. The next prime is 734134039. The reversal of 734134021 is 120431437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407030625 + 327103396 = 20175^2 + 18086^2 .

It is a cyclic number.

It is not a de Polignac number, because 734134021 - 2¹ = 734134019 is a prime.

Together with 734134019, 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 (734134321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367067010 + 367067011.

It is an arithmetic number, because the mean of its divisors is an integer number (367067011).

Almost surely, 2^734134021 is an apocalyptic number.

It is an amenable number.

734134021 is a deficient number, since it is larger than the sum of its proper divisors (1).

734134021 is an equidigital number, since it uses as much as digits as its factorization.

734134021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 734134021 is about 27094.9076580822. The cubic root of 734134021 is about 902.1078254032.

Adding to 734134021 its reverse (120431437), we get a palindrome (854565458).

The spelling of 734134021 in words is "seven hundred thirty-four million, one hundred thirty-four thousand, twenty-one".