42665106543 has 8 divisors (see below), whose sum is σ = 56888314800. Its totient is φ = 28442651328.

The previous prime is 42665106521. The next prime is 42665106571. The reversal of 42665106543 is 34560156624.

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

It is not a de Polignac number, because 42665106543 - 2⁸ = 42665106287 is a prime.

It is a super-2 number, since 2×42665106543² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42665106495 and 42665106504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42665106643) 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, 39198 + ... + 294731.

It is an arithmetic number, because the mean of its divisors is an integer number (7111039350).

Almost surely, 2^42665106543 is an apocalyptic number.

42665106543 is a deficient number, since it is larger than the sum of its proper divisors (14223208257).

42665106543 is a wasteful number, since it uses less digits than its factorization.

42665106543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376521.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 42665106543 in words is "forty-two billion, six hundred sixty-five million, one hundred six thousand, five hundred forty-three".