42404043 has 8 divisors (see below), whose sum is σ = 61678656. Its totient is φ = 25699400.

The previous prime is 42404039. The next prime is 42404083. The reversal of 42404043 is 34040424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42404043 - 2² = 42404039 is a prime.

It is a super-3 number, since 3×42404043³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42404083) 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 7 ways as a sum of consecutive naturals, for example, 642453 + ... + 642518.

It is an arithmetic number, because the mean of its divisors is an integer number (7709832).

Almost surely, 2^42404043 is an apocalyptic number.

42404043 is a deficient number, since it is larger than the sum of its proper divisors (19274613).

42404043 is a wasteful number, since it uses less digits than its factorization.

42404043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284985.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42404043 is about 6511.8386804343. The cubic root of 42404043 is about 348.7137632729.

Adding to 42404043 its reverse (34040424), we get a palindrome (76444467).

The spelling of 42404043 in words is "forty-two million, four hundred four thousand, forty-three".