1430921 has 2 divisors, whose sum is σ = 1430922. Its totient is φ = 1430920.

The previous prime is 1430903. The next prime is 1430939. The reversal of 1430921 is 1290341.

It is a balanced prime because it is at equal distance from previous prime (1430903) and next prime (1430939).

It can be written as a sum of positive squares in only one way, i.e., 990025 + 440896 = 995^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430921 - 2⁶ = 1430857 is a 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 = 1430893 and 1430902.

It is not a weakly prime, because it can be changed into another prime (1430971) 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, 715460 + 715461.

It is an arithmetic number, because the mean of its divisors is an integer number (715461).

2^1430921 is an apocalyptic number.

It is an amenable number.

1430921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430921 is an equidigital number, since it uses as much as digits as its factorization.

1430921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1430921 is about 1196.2111017709. The cubic root of 1430921 is about 112.6864988877.

The spelling of 1430921 in words is "one million, four hundred thirty thousand, nine hundred twenty-one".