1434040021 has 2 divisors, whose sum is σ = 1434040022. Its totient is φ = 1434040020.

The previous prime is 1434040007. The next prime is 1434040031. The reversal of 1434040021 is 1200404341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1148260996 + 285779025 = 33886^2 + 16905^2 .

It is an emirp because it is prime and its reverse (1200404341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1434040021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1434040031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717020010 + 717020011.

It is an arithmetic number, because the mean of its divisors is an integer number (717020011).

Almost surely, 2^1434040021 is an apocalyptic number.

It is an amenable number.

1434040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1434040021 is an equidigital number, since it uses as much as digits as its factorization.

1434040021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1434040021 is about 37868.7208788467. The cubic root of 1434040021 is about 1127.6831484037.

Adding to 1434040021 its reverse (1200404341), we get a palindrome (2634444362).

The spelling of 1434040021 in words is "one billion, four hundred thirty-four million, forty thousand, twenty-one".