42311671 has 4 divisors (see below), whose sum is σ = 42386344. Its totient is φ = 42237000.

The previous prime is 42311663. The next prime is 42311681. The reversal of 42311671 is 17611324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42311671 - 2³ = 42311663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36480 + ... + 37621.

It is an arithmetic number, because the mean of its divisors is an integer number (10596586).

Almost surely, 2^42311671 is an apocalyptic number.

42311671 is a deficient number, since it is larger than the sum of its proper divisors (74673).

42311671 is an equidigital number, since it uses as much as digits as its factorization.

42311671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74672.

The product of its digits is 1008, while the sum is 25.

The square root of 42311671 is about 6504.7421932003. The cubic root of 42311671 is about 348.4603691519.

Adding to 42311671 its reverse (17611324), we get a palindrome (59922995).

The spelling of 42311671 in words is "forty-two million, three hundred eleven thousand, six hundred seventy-one".