42090269971 has 2 divisors, whose sum is σ = 42090269972. Its totient is φ = 42090269970.

The previous prime is 42090269959. The next prime is 42090269987. The reversal of 42090269971 is 17996209024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42090269971 - 2²⁹ = 41553399059 is a prime.

It is not a weakly prime, because it can be changed into another prime (42090269471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21045134985 + 21045134986.

It is an arithmetic number, because the mean of its divisors is an integer number (21045134986).

Almost surely, 2^42090269971 is an apocalyptic number.

42090269971 is a deficient number, since it is larger than the sum of its proper divisors (1).

42090269971 is an equidigital number, since it uses as much as digits as its factorization.

42090269971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 42090269971 in words is "forty-two billion, ninety million, two hundred sixty-nine thousand, nine hundred seventy-one".