42177943 has 2 divisors, whose sum is σ = 42177944. Its totient is φ = 42177942.

The previous prime is 42177931. The next prime is 42177973. The reversal of 42177943 is 34977124.

42177943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42177943 - 2⁹ = 42177431 is a prime.

It is a super-2 number, since 2×42177943² = 3557957751422498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42177973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21088971 + 21088972.

It is an arithmetic number, because the mean of its divisors is an integer number (21088972).

Almost surely, 2^42177943 is an apocalyptic number.

42177943 is a deficient number, since it is larger than the sum of its proper divisors (1).

42177943 is an equidigital number, since it uses as much as digits as its factorization.

42177943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 42177943 is about 6494.4547885100. The cubic root of 42177943 is about 348.0928733271.

The spelling of 42177943 in words is "forty-two million, one hundred seventy-seven thousand, nine hundred forty-three".