42052147 has 2 divisors, whose sum is σ = 42052148. Its totient is φ = 42052146.

The previous prime is 42052079. The next prime is 42052163. The reversal of 42052147 is 74125024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42052147 - 2¹⁵ = 42019379 is a prime.

It is not a weakly prime, because it can be changed into another prime (42052247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21026073 + 21026074.

It is an arithmetic number, because the mean of its divisors is an integer number (21026074).

Almost surely, 2^42052147 is an apocalyptic number.

42052147 is a deficient number, since it is larger than the sum of its proper divisors (1).

42052147 is an equidigital number, since it uses as much as digits as its factorization.

42052147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 42052147 is about 6484.7626787724. The cubic root of 42052147 is about 347.7464655951.

The spelling of 42052147 in words is "forty-two million, fifty-two thousand, one hundred forty-seven".