42127643 has 8 divisors (see below), whose sum is σ = 43091088. Its totient is φ = 41174784.

The previous prime is 42127639. The next prime is 42127699. The reversal of 42127643 is 34672124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42127643 - 2² = 42127639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42127243) 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 7 ways as a sum of consecutive naturals, for example, 5696 + ... + 10802.

It is an arithmetic number, because the mean of its divisors is an integer number (5386386).

Almost surely, 2^42127643 is an apocalyptic number.

42127643 is a deficient number, since it is larger than the sum of its proper divisors (963445).

42127643 is a wasteful number, since it uses less digits than its factorization.

42127643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5293.

The product of its digits is 8064, while the sum is 29.

The square root of 42127643 is about 6490.5810987923. The cubic root of 42127643 is about 347.9544436556.

Adding to 42127643 its reverse (34672124), we get a palindrome (76799767).

The spelling of 42127643 in words is "forty-two million, one hundred twenty-seven thousand, six hundred forty-three".