43043242001 has 2 divisors, whose sum is σ = 43043242002. Its totient is φ = 43043242000.

The previous prime is 43043241911. The next prime is 43043242019. The reversal of 43043242001 is 10024234034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34426947025 + 8616294976 = 185545^2 + 92824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43043242001 is a prime.

It is not a weakly prime, because it can be changed into another prime (43043242091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21521621000 + 21521621001.

It is an arithmetic number, because the mean of its divisors is an integer number (21521621001).

Almost surely, 2^43043242001 is an apocalyptic number.

It is an amenable number.

43043242001 is a deficient number, since it is larger than the sum of its proper divisors (1).

43043242001 is an equidigital number, since it uses as much as digits as its factorization.

43043242001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 43043242001 its reverse (10024234034), we get a palindrome (53067476035).

The spelling of 43043242001 in words is "forty-three billion, forty-three million, two hundred forty-two thousand, one".