1021434481 has 2 divisors, whose sum is σ = 1021434482. Its totient is φ = 1021434480.

The previous prime is 1021434431. The next prime is 1021434499. The reversal of 1021434481 is 1844341201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570254400 + 451180081 = 23880^2 + 21241^2 .

It is an emirp because it is prime and its reverse (1844341201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021434481 - 2¹⁹ = 1020910193 is a prime.

It is a super-2 number, since 2×1021434481² = 2086656797951478722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021434431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510717240 + 510717241.

It is an arithmetic number, because the mean of its divisors is an integer number (510717241).

Almost surely, 2^1021434481 is an apocalyptic number.

It is an amenable number.

1021434481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021434481 is an equidigital number, since it uses as much as digits as its factorization.

1021434481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1021434481 is about 31959.8886262140. Note that the first 3 decimals coincide. The cubic root of 1021434481 is about 1007.0943777834.

Adding to 1021434481 its reverse (1844341201), we get a palindrome (2865775682).

The spelling of 1021434481 in words is "one billion, twenty-one million, four hundred thirty-four thousand, four hundred eighty-one".