42105255421027 has 2 divisors, whose sum is σ = 42105255421028. Its totient is φ = 42105255421026.

The previous prime is 42105255420967. The next prime is 42105255421069. The reversal of 42105255421027 is 72012455250124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42105255421027 - 2⁴³ = 33309162398819 is a prime.

It is not a weakly prime, because it can be changed into another prime (42105255421927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21052627710513 + 21052627710514.

It is an arithmetic number, because the mean of its divisors is an integer number (21052627710514).

Almost surely, 2^{42105255421027} is an apocalyptic number.

42105255421027 is a deficient number, since it is larger than the sum of its proper divisors (1).

42105255421027 is an equidigital number, since it uses as much as digits as its factorization.

42105255421027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224000, while the sum is 40.

The spelling of 42105255421027 in words is "forty-two trillion, one hundred five billion, two hundred fifty-five million, four hundred twenty-one thousand, twenty-seven".