42302102981 has 2 divisors, whose sum is σ = 42302102982. Its totient is φ = 42302102980.

The previous prime is 42302102963. The next prime is 42302103031. The reversal of 42302102981 is 18920120324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34806872356 + 7495230625 = 186566^2 + 86575^2 .

It is a cyclic number.

It is not a de Polignac number, because 42302102981 - 2¹⁴ = 42302086597 is a prime.

It is a super-2 number, since 2×42302102981² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42302102581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21151051490 + 21151051491.

It is an arithmetic number, because the mean of its divisors is an integer number (21151051491).

Almost surely, 2^42302102981 is an apocalyptic number.

It is an amenable number.

42302102981 is a deficient number, since it is larger than the sum of its proper divisors (1).

42302102981 is an equidigital number, since it uses as much as digits as its factorization.

42302102981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 42302102981 in words is "forty-two billion, three hundred two million, one hundred two thousand, nine hundred eighty-one".