1420421329 has 2 divisors, whose sum is σ = 1420421330. Its totient is φ = 1420421328.

The previous prime is 1420421311. The next prime is 1420421369. The reversal of 1420421329 is 9231240241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1419254929 + 1166400 = 37673^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420421329 - 2⁷ = 1420421201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420421297 and 1420421306.

It is not a weakly prime, because it can be changed into another prime (1420421309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710210664 + 710210665.

It is an arithmetic number, because the mean of its divisors is an integer number (710210665).

Almost surely, 2^1420421329 is an apocalyptic number.

It is an amenable number.

1420421329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420421329 is an equidigital number, since it uses as much as digits as its factorization.

1420421329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1420421329 is about 37688.4774035779. The cubic root of 1420421329 is about 1124.1020202755.

The spelling of 1420421329 in words is "one billion, four hundred twenty million, four hundred twenty-one thousand, three hundred twenty-nine".