42180968 has 8 divisors (see below), whose sum is σ = 79089330. Its totient is φ = 21090480.

The previous prime is 42180967. The next prime is 42181001. The reversal of 42180968 is 86908124.

It can be written as a sum of positive squares in only one way, i.e., 40170244 + 2010724 = 6338^2 + 1418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42180968² = 3558468122834048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42180967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2636303 + ... + 2636318.

Almost surely, 2^42180968 is an apocalyptic number.

It is an amenable number.

42180968 is a deficient number, since it is larger than the sum of its proper divisors (36908362).

42180968 is a wasteful number, since it uses less digits than its factorization.

42180968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272627 (or 5272623 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 42180968 is about 6494.6876753236. The cubic root of 42180968 is about 348.1011948628.

The spelling of 42180968 in words is "forty-two million, one hundred eighty thousand, nine hundred sixty-eight".