42131543093 has 2 divisors, whose sum is σ = 42131543094. Its totient is φ = 42131543092.

The previous prime is 42131543089. The next prime is 42131543131. The reversal of 42131543093 is 39034513124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21089719729 + 21041823364 = 145223^2 + 145058^2 .

It is a cyclic number.

It is not a de Polignac number, because 42131543093 - 2² = 42131543089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42131543693) 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, 21065771546 + 21065771547.

It is an arithmetic number, because the mean of its divisors is an integer number (21065771547).

Almost surely, 2^42131543093 is an apocalyptic number.

It is an amenable number.

42131543093 is a deficient number, since it is larger than the sum of its proper divisors (1).

42131543093 is an equidigital number, since it uses as much as digits as its factorization.

42131543093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 42131543093 in words is "forty-two billion, one hundred thirty-one million, five hundred forty-three thousand, ninety-three".