42055169 has 16 divisors (see below), whose sum is σ = 46444944. Its totient is φ = 37843200.

The previous prime is 42055147. The next prime is 42055183. The reversal of 42055169 is 96155024.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 11937025 + 30118144 = 3455^2 + 5488^2 .

It is a cyclic number.

It is not a de Polignac number, because 42055169 - 2⁸ = 42054913 is a prime.

It is a super-2 number, since 2×42055169² = 3537274479237122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42055969) 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, 143387 + ... + 143679.

It is an arithmetic number, because the mean of its divisors is an integer number (2902809).

Almost surely, 2^42055169 is an apocalyptic number.

It is an amenable number.

42055169 is a deficient number, since it is larger than the sum of its proper divisors (4389775).

42055169 is a wasteful number, since it uses less digits than its factorization.

42055169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 42055169 is about 6484.9956823424. The cubic root of 42055169 is about 347.7547954484.

It can be divided in two parts, 42055 and 169, that added together give a palindrome (42224).

The spelling of 42055169 in words is "forty-two million, fifty-five thousand, one hundred sixty-nine".