1243600097 has 2 divisors, whose sum is σ = 1243600098. Its totient is φ = 1243600096.

The previous prime is 1243600079. The next prime is 1243600147. The reversal of 1243600097 is 7900063421.

Together with previous prime (1243600079) 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., 1214104336 + 29495761 = 34844^2 + 5431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243600097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243600697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621800048 + 621800049.

It is an arithmetic number, because the mean of its divisors is an integer number (621800049).

Almost surely, 2^1243600097 is an apocalyptic number.

It is an amenable number.

1243600097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243600097 is an equidigital number, since it uses as much as digits as its factorization.

1243600097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1243600097 is about 35264.7146167384. The cubic root of 1243600097 is about 1075.3757754617.

The spelling of 1243600097 in words is "one billion, two hundred forty-three million, six hundred thousand, ninety-seven".