42668043 has 8 divisors (see below), whose sum is σ = 62062656. Its totient is φ = 25859400.

The previous prime is 42668029. The next prime is 42668099. The reversal of 42668043 is 34086624.

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

It is not a de Polignac number, because 42668043 - 2¹² = 42663947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1292971 = 42668043 / (4 + 2 + 6 + 6 + 8 + 0 + 4 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 42667995 and 42668013.

It is not an unprimeable number, because it can be changed into a prime (42668023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646453 + ... + 646518.

It is an arithmetic number, because the mean of its divisors is an integer number (7757832).

Almost surely, 2^42668043 is an apocalyptic number.

42668043 is a deficient number, since it is larger than the sum of its proper divisors (19394613).

42668043 is a wasteful number, since it uses less digits than its factorization.

42668043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292985.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 42668043 is about 6532.0780001467. The cubic root of 42668043 is about 349.4359431601.

The spelling of 42668043 in words is "forty-two million, six hundred sixty-eight thousand, forty-three".