42404240027 has 2 divisors, whose sum is σ = 42404240028. Its totient is φ = 42404240026.

The previous prime is 42404239951. The next prime is 42404240029. The reversal of 42404240027 is 72004240424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42404240027 is a prime.

Together with 42404240029, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42404240029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202120013 + 21202120014.

It is an arithmetic number, because the mean of its divisors is an integer number (21202120014).

Almost surely, 2^42404240027 is an apocalyptic number.

42404240027 is a deficient number, since it is larger than the sum of its proper divisors (1).

42404240027 is an equidigital number, since it uses as much as digits as its factorization.

42404240027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 29.

The spelling of 42404240027 in words is "forty-two billion, four hundred four million, two hundred forty thousand, twenty-seven".