42178132 has 6 divisors (see below), whose sum is σ = 73811738. Its totient is φ = 21089064.

The previous prime is 42178127. The next prime is 42178153. The reversal of 42178132 is 23187124.

It can be written as a sum of positive squares in only one way, i.e., 34527376 + 7650756 = 5876^2 + 2766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42178132.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5272263 + ... + 5272270.

Almost surely, 2^42178132 is an apocalyptic number.

It is an amenable number.

42178132 is a deficient number, since it is larger than the sum of its proper divisors (31633606).

42178132 is a wasteful number, since it uses less digits than its factorization.

42178132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544537 (or 10544535 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 42178132 is about 6494.4693393687. The cubic root of 42178132 is about 348.0933932628.

The spelling of 42178132 in words is "forty-two million, one hundred seventy-eight thousand, one hundred thirty-two".