1420434409 has 2 divisors, whose sum is σ = 1420434410. Its totient is φ = 1420434408.

The previous prime is 1420434401. The next prime is 1420434427. The reversal of 1420434409 is 9044340241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1365080809 + 55353600 = 36947^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420434409 - 2³ = 1420434401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420434401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710217204 + 710217205.

It is an arithmetic number, because the mean of its divisors is an integer number (710217205).

Almost surely, 2^1420434409 is an apocalyptic number.

It is an amenable number.

1420434409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420434409 is an equidigital number, since it uses as much as digits as its factorization.

1420434409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1420434409 is about 37688.6509310164. The cubic root of 1420434409 is about 1124.1054707093.

The spelling of 1420434409 in words is "one billion, four hundred twenty million, four hundred thirty-four thousand, four hundred nine".