1012120843 has 2 divisors, whose sum is σ = 1012120844. Its totient is φ = 1012120842.

The previous prime is 1012120831. The next prime is 1012120847. The reversal of 1012120843 is 3480212101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012120843 - 2⁹ = 1012120331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012120847) 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, 506060421 + 506060422.

It is an arithmetic number, because the mean of its divisors is an integer number (506060422).

Almost surely, 2^1012120843 is an apocalyptic number.

1012120843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012120843 is an equidigital number, since it uses as much as digits as its factorization.

1012120843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1012120843 is about 31813.8467180566. The cubic root of 1012120843 is about 1004.0240661707.

Adding to 1012120843 its reverse (3480212101), we get a palindrome (4492332944).

The spelling of 1012120843 in words is "one billion, twelve million, one hundred twenty thousand, eight hundred forty-three".