42105555607 has 4 divisors (see below), whose sum is σ = 42148390320. Its totient is φ = 42062720896.

The previous prime is 42105555563. The next prime is 42105555617. The reversal of 42105555607 is 70655550124.

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 42105555607 - 2²⁷ = 41971337879 is a prime.

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 42105555607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42105555617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21415882 + ... + 21417847.

It is an arithmetic number, because the mean of its divisors is an integer number (10537097580).

Almost surely, 2^42105555607 is an apocalyptic number.

42105555607 is a deficient number, since it is larger than the sum of its proper divisors (42834713).

42105555607 is an equidigital number, since it uses as much as digits as its factorization.

42105555607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42834712.

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 42105555607 in words is "forty-two billion, one hundred five million, five hundred fifty-five thousand, six hundred seven".