1243441097 has 2 divisors, whose sum is σ = 1243441098. Its totient is φ = 1243441096.

The previous prime is 1243441063. The next prime is 1243441117. The reversal of 1243441097 is 7901443421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1218079801 + 25361296 = 34901^2 + 5036^2 .

It is an emirp because it is prime and its reverse (7901443421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1243441097 - 2¹⁸ = 1243178953 is a prime.

It is a super-2 number, since 2×1243441097² = 3092291523417126818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1243441027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621720548 + 621720549.

It is an arithmetic number, because the mean of its divisors is an integer number (621720549).

Almost surely, 2^1243441097 is an apocalyptic number.

It is an amenable number.

1243441097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243441097 is an equidigital number, since it uses as much as digits as its factorization.

1243441097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1243441097 is about 35262.4601665851. The cubic root of 1243441097 is about 1075.3299429264.

The spelling of 1243441097 in words is "one billion, two hundred forty-three million, four hundred forty-one thousand, ninety-seven".