42955547 has 2 divisors, whose sum is σ = 42955548. Its totient is φ = 42955546.

The previous prime is 42955537. The next prime is 42955567. The reversal of 42955547 is 74555924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42955547 - 2⁴ = 42955531 is a prime.

It is not a weakly prime, because it can be changed into another prime (42955537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21477773 + 21477774.

It is an arithmetic number, because the mean of its divisors is an integer number (21477774).

Almost surely, 2^42955547 is an apocalyptic number.

42955547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42955547 is an equidigital number, since it uses as much as digits as its factorization.

42955547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 41.

The square root of 42955547 is about 6554.0481383646. The cubic root of 42955547 is about 350.2190384021.

The spelling of 42955547 in words is "forty-two million, nine hundred fifty-five thousand, five hundred forty-seven".