1021230043 has 2 divisors, whose sum is σ = 1021230044. Its totient is φ = 1021230042.

The previous prime is 1021230037. The next prime is 1021230071. The reversal of 1021230043 is 3400321201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021230043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021229999 and 1021230026.

It is not a weakly prime, because it can be changed into another prime (1021230643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510615021 + 510615022.

It is an arithmetic number, because the mean of its divisors is an integer number (510615022).

Almost surely, 2^1021230043 is an apocalyptic number.

1021230043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021230043 is an equidigital number, since it uses as much as digits as its factorization.

1021230043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1021230043 is about 31956.6901133393. The cubic root of 1021230043 is about 1007.0271840143.

Adding to 1021230043 its reverse (3400321201), we get a palindrome (4421551244).

The spelling of 1021230043 in words is "one billion, twenty-one million, two hundred thirty thousand, forty-three".