42080365 has 8 divisors (see below), whose sum is σ = 50535288. Its totient is φ = 33638400.

The previous prime is 42080327. The next prime is 42080371. The reversal of 42080365 is 56308024.

It can be written as a sum of positive squares in 4 ways, for example, as 6487209 + 35593156 = 2547^2 + 5966^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42080365 - 2¹⁹ = 41556077 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 7 ways as a sum of consecutive naturals, for example, 6669 + ... + 11341.

It is an arithmetic number, because the mean of its divisors is an integer number (6316911).

Almost surely, 2^42080365 is an apocalyptic number.

It is an amenable number.

42080365 is a deficient number, since it is larger than the sum of its proper divisors (8454923).

42080365 is a wasteful number, since it uses less digits than its factorization.

42080365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42080365 is about 6486.9380296100. The cubic root of 42080365 is about 347.8242302788.

Adding to 42080365 its reverse (56308024), we get a palindrome (98388389).

The spelling of 42080365 in words is "forty-two million, eighty thousand, three hundred sixty-five".