1243234001 has 2 divisors, whose sum is σ = 1243234002. Its totient is φ = 1243234000.

The previous prime is 1243233997. The next prime is 1243234039. The reversal of 1243234001 is 1004323421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804289600 + 438944401 = 28360^2 + 20951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243234001 - 2² = 1243233997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243234081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621617000 + 621617001.

It is an arithmetic number, because the mean of its divisors is an integer number (621617001).

Almost surely, 2^1243234001 is an apocalyptic number.

It is an amenable number.

1243234001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243234001 is an equidigital number, since it uses as much as digits as its factorization.

1243234001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1243234001 is about 35259.5235503828. The cubic root of 1243234001 is about 1075.2702406226.

Adding to 1243234001 its reverse (1004323421), we get a palindrome (2247557422).

The spelling of 1243234001 in words is "one billion, two hundred forty-three million, two hundred thirty-four thousand, one".