42171734 has 16 divisors (see below), whose sum is σ = 70614720. Its totient is φ = 18722760.

The previous prime is 42171721. The next prime is 42171761. The reversal of 42171734 is 43717124.

It is a junction number, because it is equal to n+sod(n) for n = 42171697 and 42171706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21344 + ... + 23235.

It is an arithmetic number, because the mean of its divisors is an integer number (4413420).

Almost surely, 2^42171734 is an apocalyptic number.

42171734 is a deficient number, since it is larger than the sum of its proper divisors (28442986).

42171734 is a wasteful number, since it uses less digits than its factorization.

42171734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44635.

The product of its digits is 4704, while the sum is 29.

The square root of 42171734 is about 6493.9767477255. The cubic root of 42171734 is about 348.0757916128.

Adding to 42171734 its reverse (43717124), we get a palindrome (85888858).

The spelling of 42171734 in words is "forty-two million, one hundred seventy-one thousand, seven hundred thirty-four".