1242234997 has 2 divisors, whose sum is σ = 1242234998. Its totient is φ = 1242234996.

The previous prime is 1242234979. The next prime is 1242235061. The reversal of 1242234997 is 7994322421.

Together with previous prime (1242234979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241928081 + 306916 = 35241^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242234997 - 2¹¹ = 1242232949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242234937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621117498 + 621117499.

It is an arithmetic number, because the mean of its divisors is an integer number (621117499).

Almost surely, 2^1242234997 is an apocalyptic number.

It is an amenable number.

1242234997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242234997 is an equidigital number, since it uses as much as digits as its factorization.

1242234997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 1242234997 is about 35245.3542612356. The cubic root of 1242234997 is about 1074.9821513532.

The spelling of 1242234997 in words is "one billion, two hundred forty-two million, two hundred thirty-four thousand, nine hundred ninety-seven".