42442977 has 4 divisors (see below), whose sum is σ = 56590640. Its totient is φ = 28295316.

The previous prime is 42442969. The next prime is 42442993. The reversal of 42442977 is 77924424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42442977 - 2³ = 42442969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42442997) 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 in 3 ways as a sum of consecutive naturals, for example, 7073827 + ... + 7073832.

It is an arithmetic number, because the mean of its divisors is an integer number (14147660).

Almost surely, 2^42442977 is an apocalyptic number.

It is an amenable number.

42442977 is a deficient number, since it is larger than the sum of its proper divisors (14147663).

42442977 is a wasteful number, since it uses less digits than its factorization.

42442977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14147662.

The product of its digits is 112896, while the sum is 39.

The square root of 42442977 is about 6514.8274727732. The cubic root of 42442977 is about 348.8204564681.

The spelling of 42442977 in words is "forty-two million, four hundred forty-two thousand, nine hundred seventy-seven".