42055290 has 48 divisors (see below), whose sum is σ = 111896928. Its totient is φ = 10952928.

The previous prime is 42055261. The next prime is 42055357. The reversal of 42055290 is 9255024.

42055290 is a `hidden beast` number, since 4 + 20 + 552 + 90 = 666.

42055290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 1564 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (2331186).

Almost surely, 2^42055290 is an apocalyptic number.

42055290 is an abundant number, since it is smaller than the sum of its proper divisors (69841638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42055290 is a wasteful number, since it uses less digits than its factorization.

42055290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923 (or 10920 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 42055290 is about 6485.0050115632. The cubic root of 42055290 is about 347.7551289650.

The spelling of 42055290 in words is "forty-two million, fifty-five thousand, two hundred ninety".