42067071 has 12 divisors (see below), whose sum is σ = 61031880. Its totient is φ = 27920880.

The previous prime is 42067063. The next prime is 42067073. The reversal of 42067071 is 17076024.

It is not a de Polignac number, because 42067071 - 2³ = 42067063 is a prime.

It is a super-3 number, since 3×42067071³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42067073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8145 + ... + 12266.

It is an arithmetic number, because the mean of its divisors is an integer number (5085990).

Almost surely, 2^42067071 is an apocalyptic number.

42067071 is a deficient number, since it is larger than the sum of its proper divisors (18964809).

42067071 is a wasteful number, since it uses less digits than its factorization.

42067071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20646 (or 20643 counting only the distinct ones).

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

The square root of 42067071 is about 6485.9132741658. The cubic root of 42067071 is about 347.7875982903.

The spelling of 42067071 in words is "forty-two million, sixty-seven thousand, seventy-one".