42367081 has 9 divisors (see below), whose sum is σ = 44446269. Its totient is φ = 40381836.

The previous prime is 42367051. The next prime is 42367097. The reversal of 42367081 is 18076324.

The square root of 42367081 is 6509.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 42367081 - 2⁷ = 42366953 is a prime.

It is a super-2 number, since 2×42367081² = 3589939104921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42367021) 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, 149566 + ... + 149848.

Almost surely, 2^42367081 is an apocalyptic number.

42367081 is the 6509-th square number.

42367081 is the 3255-th centered octagonal number.

It is an amenable number.

42367081 is a deficient number, since it is larger than the sum of its proper divisors (2079188).

42367081 is an frugal number, since it uses more digits than its factorization.

42367081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The cubic root of 42367081 is about 348.6124136215.

The spelling of 42367081 in words is "forty-two million, three hundred sixty-seven thousand, eighty-one".