1430340021 has 12 divisors (see below), whose sum is σ = 2253869280. Its totient is φ = 866872680.

The previous prime is 1430340019. The next prime is 1430340029. The reversal of 1430340021 is 1200430341.

It is not a de Polignac number, because 1430340021 - 2¹ = 1430340019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1430339976 and 1430340003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430340029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7223841 + ... + 7224038.

It is an arithmetic number, because the mean of its divisors is an integer number (187822440).

Almost surely, 2^1430340021 is an apocalyptic number.

1430340021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1430340021 is a deficient number, since it is larger than the sum of its proper divisors (823529259).

1430340021 is a wasteful number, since it uses less digits than its factorization.

1430340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14447896 (or 14447893 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1430340021 is about 37819.8363428506. The cubic root of 1430340021 is about 1126.7124592551.

Adding to 1430340021 its reverse (1200430341), we get a palindrome (2630770362).

The spelling of 1430340021 in words is "one billion, four hundred thirty million, three hundred forty thousand, twenty-one".