42105255421055 has 8 divisors (see below), whose sum is σ = 50526761288832. Its totient is φ = 33683901147808.

The previous prime is 42105255421027. The next prime is 42105255421069. The reversal of 42105255421055 is 55012455250124.

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 42105255421055 - 2¹⁴ = 42105255404671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37286684 + ... + 38399313.

It is an arithmetic number, because the mean of its divisors is an integer number (6315845161104).

Almost surely, 2^{42105255421055} is an apocalyptic number.

42105255421055 is a deficient number, since it is larger than the sum of its proper divisors (8421505867777).

42105255421055 is a wasteful number, since it uses less digits than its factorization.

42105255421055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75797265.

The product of its (nonzero) digits is 400000, while the sum is 41.

The spelling of 42105255421055 in words is "forty-two trillion, one hundred five billion, two hundred fifty-five million, four hundred twenty-one thousand, fifty-five".