42116855 has 16 divisors (see below), whose sum is σ = 56073600. Its totient is φ = 30108960.

The previous prime is 42116843. The next prime is 42116857. The reversal of 42116855 is 55861124.

It is not a de Polignac number, because 42116855 - 2¹⁰ = 42115831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42116857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3245 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (3504600).

Almost surely, 2^42116855 is an apocalyptic number.

42116855 is a deficient number, since it is larger than the sum of its proper divisors (13956745).

42116855 is a wasteful number, since it uses less digits than its factorization.

42116855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13054.

The product of its digits is 9600, while the sum is 32.

The square root of 42116855 is about 6489.7499951847. The cubic root of 42116855 is about 347.9247398575.

Adding to 42116855 its reverse (55861124), we get a palindrome (97977979).

The spelling of 42116855 in words is "forty-two million, one hundred sixteen thousand, eight hundred fifty-five".