42105230402055 has 16 divisors (see below), whose sum is σ = 67368449378304. Its totient is φ = 22456095969440.

The previous prime is 42105230402051. The next prime is 42105230402083. The reversal of 42105230402055 is 55020403250124.

It is a happy number.

It is not a de Polignac number, because 42105230402055 - 2² = 42105230402051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42105230402051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22087690 + ... + 23918120.

It is an arithmetic number, because the mean of its divisors is an integer number (4210528086144).

Almost surely, 2^{42105230402055} is an apocalyptic number.

42105230402055 is a deficient number, since it is larger than the sum of its proper divisors (25263218976249).

42105230402055 is a wasteful number, since it uses less digits than its factorization.

42105230402055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363966.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 42105230402055 its reverse (55020403250124), we get a palindrome (97125633652179).

The spelling of 42105230402055 in words is "forty-two trillion, one hundred five billion, two hundred thirty million, four hundred two thousand, fifty-five".