42144671 has 4 divisors (see below), whose sum is σ = 43977072. Its totient is φ = 40312272.

The previous prime is 42144667. The next prime is 42144701. The reversal of 42144671 is 17644124.

It is a happy number.

42144671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42144671 - 2² = 42144667 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 (42144611) 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 in 3 ways as a sum of consecutive naturals, for example, 916166 + ... + 916211.

It is an arithmetic number, because the mean of its divisors is an integer number (10994268).

Almost surely, 2^42144671 is an apocalyptic number.

42144671 is a deficient number, since it is larger than the sum of its proper divisors (1832401).

42144671 is a wasteful number, since it uses less digits than its factorization.

42144671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832400.

The product of its digits is 5376, while the sum is 29.

The square root of 42144671 is about 6491.8927132232. The cubic root of 42144671 is about 348.0013184210.

Adding to 42144671 its reverse (17644124), we get a palindrome (59788795).

The spelling of 42144671 in words is "forty-two million, one hundred forty-four thousand, six hundred seventy-one".