1430641 has 2 divisors, whose sum is σ = 1430642. Its totient is φ = 1430640.

The previous prime is 1430617. The next prime is 1430647. The reversal of 1430641 is 1460341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1430416 + 225 = 1196^2 + 15^2 .

It is an emirp because it is prime and its reverse (1460341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1430641 - 2¹¹ = 1428593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1430647) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715320 + 715321.

It is an arithmetic number, because the mean of its divisors is an integer number (715321).

2^1430641 is an apocalyptic number.

It is an amenable number.

1430641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430641 is an equidigital number, since it uses as much as digits as its factorization.

1430641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1430641 is about 1196.0940598465. The cubic root of 1430641 is about 112.6791483124.

Adding to 1430641 its reverse (1460341), we get a palindrome (2890982).

The spelling of 1430641 in words is "one million, four hundred thirty thousand, six hundred forty-one".