42081068 has 12 divisors (see below), whose sum is σ = 73736712. Its totient is φ = 21013440.

The previous prime is 42081019. The next prime is 42081089. The reversal of 42081068 is 86018024.

It is a self number, because there is not a number n which added to its sum of digits gives 42081068.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3053 + ... + 9668.

It is an arithmetic number, because the mean of its divisors is an integer number (6144726).

Almost surely, 2^42081068 is an apocalyptic number.

It is an amenable number.

42081068 is a deficient number, since it is larger than the sum of its proper divisors (31655644).

42081068 is a wasteful number, since it uses less digits than its factorization.

42081068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13552 (or 13550 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 42081068 is about 6486.9922151950. The cubic root of 42081068 is about 347.8261672002.

The spelling of 42081068 in words is "forty-two million, eighty-one thousand, sixty-eight".