42336264971381 has 2 divisors, whose sum is σ = 42336264971382. Its totient is φ = 42336264971380.

The previous prime is 42336264971333. The next prime is 42336264971447. The reversal of 42336264971381 is 18317946263324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22138521215281 + 20197743756100 = 4705159^2 + 4494190^2 .

It is a cyclic number.

It is not a de Polignac number, because 42336264971381 - 2¹⁰ = 42336264970357 is a prime.

It is a super-2 number, since 2×42336264971381² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42336264971381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42336264971081) 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, 21168132485690 + 21168132485691.

It is an arithmetic number, because the mean of its divisors is an integer number (21168132485691).

Almost surely, 2^{42336264971381} is an apocalyptic number.

It is an amenable number.

42336264971381 is a deficient number, since it is larger than the sum of its proper divisors (1).

42336264971381 is an equidigital number, since it uses as much as digits as its factorization.

42336264971381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 59.

The spelling of 42336264971381 in words is "forty-two trillion, three hundred thirty-six billion, two hundred sixty-four million, nine hundred seventy-one thousand, three hundred eighty-one".