1430729 has 2 divisors, whose sum is σ = 1430730. Its totient is φ = 1430728.

The previous prime is 1430717. The next prime is 1430749. The reversal of 1430729 is 9270341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1428025 + 2704 = 1195^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430729 - 2⁴ = 1430713 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1430698 and 1430707.

It is not a weakly prime, because it can be changed into another prime (1430749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715364 + 715365.

It is an arithmetic number, because the mean of its divisors is an integer number (715365).

2^1430729 is an apocalyptic number.

It is an amenable number.

1430729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430729 is an equidigital number, since it uses as much as digits as its factorization.

1430729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1430729 is about 1196.1308456854. The cubic root of 1430729 is about 112.6814585965.

The spelling of 1430729 in words is "one million, four hundred thirty thousand, seven hundred twenty-nine".