42043671 has 16 divisors (see below), whose sum is σ = 62653920. Its totient is φ = 27864000.

The previous prime is 42043667. The next prime is 42043691. The reversal of 42043671 is 17634024.

It is not a de Polignac number, because 42043671 - 2² = 42043667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171 + ... + 9171.

It is an arithmetic number, because the mean of its divisors is an integer number (3915870).

Almost surely, 2^42043671 is an apocalyptic number.

42043671 is a deficient number, since it is larger than the sum of its proper divisors (20610249).

42043671 is a wasteful number, since it uses less digits than its factorization.

42043671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183 (or 9177 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 42043671 is about 6484.1091138259. The cubic root of 42043671 is about 347.7231001841.

Adding to 42043671 its reverse (17634024), we get a palindrome (59677695).

It can be divided in two parts, 4204 and 3671, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 42043671 in words is "forty-two million, forty-three thousand, six hundred seventy-one".