42505210 has 16 divisors (see below), whose sum is σ = 83464992. Its totient is φ = 15456400.

The previous prime is 42505207. The next prime is 42505231. The reversal of 42505210 is 1250524.

42505210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193096 + ... + 193315.

It is an arithmetic number, because the mean of its divisors is an integer number (5216562).

Almost surely, 2^42505210 is an apocalyptic number.

42505210 is a deficient number, since it is larger than the sum of its proper divisors (40959782).

42505210 is a wasteful number, since it uses less digits than its factorization.

42505210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386429.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42505210 is about 6519.6019817164. The cubic root of 42505210 is about 348.9908619047.

Adding to 42505210 its reverse (1250524), we get a palindrome (43755734).

The spelling of 42505210 in words is "forty-two million, five hundred five thousand, two hundred ten".