42138710 has 32 divisors (see below), whose sum is σ = 79120800. Its totient is φ = 16152864.

The previous prime is 42138689. The next prime is 42138781. The reversal of 42138710 is 1783124.

42138710 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42138710.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 795044 + ... + 795096.

It is an arithmetic number, because the mean of its divisors is an integer number (2472525).

Almost surely, 2^42138710 is an apocalyptic number.

42138710 is a deficient number, since it is larger than the sum of its proper divisors (36982090).

42138710 is an frugal number, since it uses more digits than its factorization.

42138710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 42138710 is about 6491.4335858884. The cubic root of 42138710 is about 347.9849103864.

The spelling of 42138710 in words is "forty-two million, one hundred thirty-eight thousand, seven hundred ten".