42005341397 has 2 divisors, whose sum is σ = 42005341398. Its totient is φ = 42005341396.

The previous prime is 42005341387. The next prime is 42005341423. The reversal of 42005341397 is 79314350024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36348947716 + 5656393681 = 190654^2 + 75209^2 .

It is a cyclic number.

It is not a de Polignac number, because 42005341397 - 2²⁶ = 41938232533 is a prime.

It is a super-3 number, since 3×42005341397³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42005341397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42005341387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21002670698 + 21002670699.

It is an arithmetic number, because the mean of its divisors is an integer number (21002670699).

Almost surely, 2^42005341397 is an apocalyptic number.

It is an amenable number.

42005341397 is a deficient number, since it is larger than the sum of its proper divisors (1).

42005341397 is an equidigital number, since it uses as much as digits as its factorization.

42005341397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 42005341397 in words is "forty-two billion, five million, three hundred forty-one thousand, three hundred ninety-seven".