71067042 has 18 divisors (see below), whose sum is σ = 154056123. Its totient is φ = 23677092.

The previous prime is 71067001. The next prime is 71067043. The reversal of 71067042 is 24076017.

It can be written as a sum of positive squares in only one way, i.e., 35533521 + 35533521 = 5961^2 + 5961^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5961.

It is a junction number, because it is equal to n+sod(n) for n = 71066997 and 71067015.

It is not an unprimeable number, because it can be changed into a prime (71067043) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34773 + ... + 36759.

Almost surely, 2^71067042 is an apocalyptic number.

71067042 is an abundant number, since it is smaller than the sum of its proper divisors (82989081).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71067042 is an equidigital number, since it uses as much as digits as its factorization.

71067042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 71067042 is about 8430.1270453060. The cubic root of 71067042 is about 414.2120666661.

Subtracting from 71067042 its reverse (24076017), we obtain a square (46991025 = 6855²).

The spelling of 71067042 in words is "seventy-one million, sixty-seven thousand, forty-two".