1111242971 has 2 divisors, whose sum is σ = 1111242972. Its totient is φ = 1111242970.

The previous prime is 1111242959. The next prime is 1111243057. The reversal of 1111242971 is 1792421111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111242971 - 2¹⁰ = 1111241947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1111242071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555621485 + 555621486.

It is an arithmetic number, because the mean of its divisors is an integer number (555621486).

Almost surely, 2^1111242971 is an apocalyptic number.

1111242971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111242971 is an equidigital number, since it uses as much as digits as its factorization.

1111242971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 29.

The square root of 1111242971 is about 33335.3111729889. The cubic root of 1111242971 is about 1035.7851389639.

The spelling of 1111242971 in words is "one billion, one hundred eleven million, two hundred forty-two thousand, nine hundred seventy-one".