42349660901 has 2 divisors, whose sum is σ = 42349660902. Its totient is φ = 42349660900.

The previous prime is 42349660867. The next prime is 42349660921. The reversal of 42349660901 is 10906694324.

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., 24688579876 + 17661081025 = 157126^2 + 132895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42349660901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42349660921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21174830450 + 21174830451.

It is an arithmetic number, because the mean of its divisors is an integer number (21174830451).

Almost surely, 2^42349660901 is an apocalyptic number.

It is an amenable number.

42349660901 is a deficient number, since it is larger than the sum of its proper divisors (1).

42349660901 is an equidigital number, since it uses as much as digits as its factorization.

42349660901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 42349660901 in words is "forty-two billion, three hundred forty-nine million, six hundred sixty thousand, nine hundred one".