42505310 has 8 divisors (see below), whose sum is σ = 76509576. Its totient is φ = 17002120.

The previous prime is 42505277. The next prime is 42505327. The reversal of 42505310 is 1350524.

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

It is a super-2 number, since 2×42505310² = 3613402756392200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125256 + ... + 2125275.

It is an arithmetic number, because the mean of its divisors is an integer number (9563697).

Almost surely, 2^42505310 is an apocalyptic number.

42505310 is a deficient number, since it is larger than the sum of its proper divisors (34004266).

42505310 is a wasteful number, since it uses less digits than its factorization.

42505310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250538.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42505310 is about 6519.6096508917. The cubic root of 42505310 is about 348.9911355893.

Adding to 42505310 its reverse (1350524), we get a palindrome (43855834).

The spelling of 42505310 in words is "forty-two million, five hundred five thousand, three hundred ten".