42491055 has 16 divisors (see below), whose sum is σ = 69433344. Its totient is φ = 22179360.

The previous prime is 42491027. The next prime is 42491083. The reversal of 42491055 is 55019424.

42491055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42491027) and next prime (42491083).

It is not a de Polignac number, because 42491055 - 2⁵ = 42491023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29431 + ... + 30840.

It is an arithmetic number, because the mean of its divisors is an integer number (4339584).

Almost surely, 2^42491055 is an apocalyptic number.

42491055 is a deficient number, since it is larger than the sum of its proper divisors (26942289).

42491055 is a wasteful number, since it uses less digits than its factorization.

42491055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60326.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 42491055 is about 6518.5163189180. The cubic root of 42491055 is about 348.9521175240.

The spelling of 42491055 in words is "forty-two million, four hundred ninety-one thousand, fifty-five".