1434405197921 has 2 divisors, whose sum is σ = 1434405197922. Its totient is φ = 1434405197920.

The previous prime is 1434405197909. The next prime is 1434405197983. The reversal of 1434405197921 is 1297915044341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1387003199521 + 47401998400 = 1177711^2 + 217720^2 .

It is an emirp because it is prime and its reverse (1297915044341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1434405197921 - 2³⁴ = 1417225328737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1434405197921.

It is not a weakly prime, because it can be changed into another prime (1434401197921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717202598960 + 717202598961.

It is an arithmetic number, because the mean of its divisors is an integer number (717202598961).

Almost surely, 2^{1434405197921} is an apocalyptic number.

It is an amenable number.

1434405197921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1434405197921 is an equidigital number, since it uses as much as digits as its factorization.

1434405197921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 1434405197921 in words is "one trillion, four hundred thirty-four billion, four hundred five million, one hundred ninety-seven thousand, nine hundred twenty-one".