42434081 has 4 divisors (see below), whose sum is σ = 42454272. Its totient is φ = 42413892.

The previous prime is 42434069. The next prime is 42434083. The reversal of 42434081 is 18043424.

42434081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42434081 - 2⁶ = 42434017 is a prime.

It is a super-2 number, since 2×42434081² = 3601302460629122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42434081.

It is not an unprimeable number, because it can be changed into a prime (42434083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6521 + ... + 11286.

It is an arithmetic number, because the mean of its divisors is an integer number (10613568).

Almost surely, 2^42434081 is an apocalyptic number.

It is an amenable number.

42434081 is a deficient number, since it is larger than the sum of its proper divisors (20191).

42434081 is a wasteful number, since it uses less digits than its factorization.

42434081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 42434081 is about 6514.1446867567. The cubic root of 42434081 is about 348.7960839741.

The spelling of 42434081 in words is "forty-two million, four hundred thirty-four thousand, eighty-one".