42055165 has 4 divisors (see below), whose sum is σ = 50466204.
Its totient is φ = 33644128.
The previous prime is 42055147. The next prime is 42055183. The reversal of 42055165 is 56155024.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (42055147) and next prime (42055183).
It can be written as a sum of positive squares in 2 ways, for example, as 25130169 + 16924996 = 5013^2 + 4114^2
It is a cyclic number.
It is not a de Polignac number, because 42055165 - 219 = 41530877 is a prime.
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, 4205512 + ... + 4205521.
It is an arithmetic number, because the mean of its divisors is an integer number (12616551).
Almost surely, 242055165 is an apocalyptic number.
It is an amenable number.
42055165 is a deficient number, since it is larger than the sum of its proper divisors (8411039).
42055165 is an equidigital number, since it uses as much as digits as its factorization.
42055165 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8411038.
The product of its (nonzero) digits is 6000, while the sum is 28.
The square root of 42055165 is about 6484.9953739382.
The cubic root of 42055165 is about 347.7547844231.
The spelling of 42055165 in words is "forty-two million, fifty-five thousand, one hundred sixty-five".