42441020381 has 2 divisors, whose sum is σ = 42441020382. Its totient is φ = 42441020380.

The previous prime is 42441020299. The next prime is 42441020383. The reversal of 42441020381 is 18302014424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29951840356 + 12489180025 = 173066^2 + 111755^2 .

It is a cyclic number.

It is not a de Polignac number, because 42441020381 - 2³⁴ = 25261151197 is a prime.

It is a super-2 number, since 2×42441020381² (a number of 22 digits) contains 22 as substring.

Together with 42441020383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42441020383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220510190 + 21220510191.

It is an arithmetic number, because the mean of its divisors is an integer number (21220510191).

Almost surely, 2^42441020381 is an apocalyptic number.

It is an amenable number.

42441020381 is a deficient number, since it is larger than the sum of its proper divisors (1).

42441020381 is an equidigital number, since it uses as much as digits as its factorization.

42441020381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 42441020381 in words is "forty-two billion, four hundred forty-one million, twenty thousand, three hundred eighty-one".