42180956 has 12 divisors (see below), whose sum is σ = 76198080. Its totient is φ = 20410080.

The previous prime is 42180953. The next prime is 42180959. The reversal of 42180956 is 65908124.

It is an interprime number because it is at equal distance from previous prime (42180953) and next prime (42180959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42180953) 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 3 ways as a sum of consecutive naturals, for example, 169961 + ... + 170208.

It is an arithmetic number, because the mean of its divisors is an integer number (6349840).

Almost surely, 2^42180956 is an apocalyptic number.

It is an amenable number.

42180956 is a deficient number, since it is larger than the sum of its proper divisors (34017124).

42180956 is a wasteful number, since it uses less digits than its factorization.

42180956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340204 (or 340202 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 42180956 is about 6494.6867514916. The cubic root of 42180956 is about 348.1011618525.

The spelling of 42180956 in words is "forty-two million, one hundred eighty thousand, nine hundred fifty-six".