42850055 has 4 divisors (see below), whose sum is σ = 51420072. Its totient is φ = 34280040.

The previous prime is 42850039. The next prime is 42850069. The reversal of 42850055 is 55005824.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42850055 - 2⁴ = 42850039 is a prime.

It is a super-2 number, since 2×42850055² = 3672254427006050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4285001 + ... + 4285010.

It is an arithmetic number, because the mean of its divisors is an integer number (12855018).

Almost surely, 2^42850055 is an apocalyptic number.

42850055 is a deficient number, since it is larger than the sum of its proper divisors (8570017).

42850055 is an equidigital number, since it uses as much as digits as its factorization.

42850055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570016.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 42850055 is about 6545.9953406644. The cubic root of 42850055 is about 349.9321092808.

Adding to 42850055 its reverse (55005824), we get a palindrome (97855879).

The spelling of 42850055 in words is "forty-two million, eight hundred fifty thousand, fifty-five".