42181096 has 8 divisors (see below), whose sum is σ = 79089570. Its totient is φ = 21090544.

The previous prime is 42181093. The next prime is 42181127. The reversal of 42181096 is 69018124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22944100 + 19236996 = 4790^2 + 4386^2 .

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

It is a super-2 number, since 2×42181096² = 3558489719522432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42181091) 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 as a sum of consecutive naturals, namely, 2636311 + ... + 2636326.

Almost surely, 2^42181096 is an apocalyptic number.

It is an amenable number.

42181096 is a deficient number, since it is larger than the sum of its proper divisors (36908474).

42181096 is a wasteful number, since it uses less digits than its factorization.

42181096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272643 (or 5272639 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 42181096 is about 6494.6975295236. The cubic root of 42181096 is about 348.1015469719.

The spelling of 42181096 in words is "forty-two million, one hundred eighty-one thousand, ninety-six".