42120002147 has 2 divisors, whose sum is σ = 42120002148. Its totient is φ = 42120002146.

The previous prime is 42120002083. The next prime is 42120002167. The reversal of 42120002147 is 74120002124.

42120002147 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 is a cyclic number.

It is not a de Polignac number, because 42120002147 - 2⁶ = 42120002083 is a prime.

It is not a weakly prime, because it can be changed into another prime (42120002167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060001073 + 21060001074.

It is an arithmetic number, because the mean of its divisors is an integer number (21060001074).

Almost surely, 2^42120002147 is an apocalyptic number.

42120002147 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120002147 is an equidigital number, since it uses as much as digits as its factorization.

42120002147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

Subtracting from 42120002147 its sum of digits (23), we obtain a palindrome (42120002124).

The spelling of 42120002147 in words is "forty-two billion, one hundred twenty million, two thousand, one hundred forty-seven".