42554147 has 2 divisors, whose sum is σ = 42554148. Its totient is φ = 42554146.

The previous prime is 42554123. The next prime is 42554159. The reversal of 42554147 is 74145524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42554147 - 2⁸ = 42553891 is a prime.

It is not a weakly prime, because it can be changed into another prime (42554647) 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, 21277073 + 21277074.

It is an arithmetic number, because the mean of its divisors is an integer number (21277074).

Almost surely, 2^42554147 is an apocalyptic number.

42554147 is a deficient number, since it is larger than the sum of its proper divisors (1).

42554147 is an equidigital number, since it uses as much as digits as its factorization.

42554147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 32.

The square root of 42554147 is about 6523.3539686269. The cubic root of 42554147 is about 349.1247436549.

The spelling of 42554147 in words is "forty-two million, five hundred fifty-four thousand, one hundred forty-seven".