42840054 has 12 divisors (see below), whose sum is σ = 92820156. Its totient is φ = 14280012.

The previous prime is 42839999. The next prime is 42840067. The reversal of 42840054 is 45004824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1189984 + ... + 1190019.

It is an arithmetic number, because the mean of its divisors is an integer number (7735013).

Almost surely, 2^42840054 is an apocalyptic number.

42840054 is an abundant number, since it is smaller than the sum of its proper divisors (49980102).

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

42840054 is a wasteful number, since it uses less digits than its factorization.

42840054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380011 (or 2380008 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 42840054 is about 6545.2313939234. The cubic root of 42840054 is about 349.9048829966.

Adding to 42840054 its reverse (45004824), we get a palindrome (87844878).

The spelling of 42840054 in words is "forty-two million, eight hundred forty thousand, fifty-four".