42010043 has 4 divisors (see below), whose sum is σ = 44481240. Its totient is φ = 39538848.

The previous prime is 42010039. The next prime is 42010049. The reversal of 42010043 is 34001024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42010043 - 2² = 42010039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42010049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235573 + ... + 1235606.

It is an arithmetic number, because the mean of its divisors is an integer number (11120310).

Almost surely, 2^42010043 is an apocalyptic number.

42010043 is a deficient number, since it is larger than the sum of its proper divisors (2471197).

42010043 is a wasteful number, since it uses less digits than its factorization.

42010043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471196.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42010043 is about 6481.5154863658. The cubic root of 42010043 is about 347.6303684199.

Adding to 42010043 its reverse (34001024), we get a palindrome (76011067).

It can be divided in two parts, 420 and 10043, that multiplied together give a triangular number (4218060 = T₂₉₀₄).

The spelling of 42010043 in words is "forty-two million, ten thousand, forty-three".