1243200041 has 2 divisors, whose sum is σ = 1243200042. Its totient is φ = 1243200040.

The previous prime is 1243200031. The next prime is 1243200053. The reversal of 1243200041 is 1400023421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 962302441 + 280897600 = 31021^2 + 16760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243200041 - 2⁶ = 1243199977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243199992 and 1243200019.

It is not a weakly prime, because it can be changed into another prime (1243200031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621600020 + 621600021.

It is an arithmetic number, because the mean of its divisors is an integer number (621600021).

Almost surely, 2^1243200041 is an apocalyptic number.

It is an amenable number.

1243200041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243200041 is an equidigital number, since it uses as much as digits as its factorization.

1243200041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1243200041 is about 35259.0419750736. The cubic root of 1243200041 is about 1075.2604498914.

Adding to 1243200041 its reverse (1400023421), we get a palindrome (2643223462).

The spelling of 1243200041 in words is "one billion, two hundred forty-three million, two hundred thousand, forty-one".