42431539277 has 2 divisors, whose sum is σ = 42431539278. Its totient is φ = 42431539276.

The previous prime is 42431539243. The next prime is 42431539279. The reversal of 42431539277 is 77293513424.

It is a happy number.

42431539277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34989198916 + 7442340361 = 187054^2 + 86269^2 .

It is a cyclic number.

It is not a de Polignac number, because 42431539277 - 2²⁶ = 42364430413 is a prime.

Together with 42431539279, 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 (42431539279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215769638 + 21215769639.

It is an arithmetic number, because the mean of its divisors is an integer number (21215769639).

Almost surely, 2^42431539277 is an apocalyptic number.

It is an amenable number.

42431539277 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431539277 is an equidigital number, since it uses as much as digits as its factorization.

42431539277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 47.

The spelling of 42431539277 in words is "forty-two billion, four hundred thirty-one million, five hundred thirty-nine thousand, two hundred seventy-seven".