42135206 has 4 divisors (see below), whose sum is σ = 63202812. Its totient is φ = 21067602.

The previous prime is 42135187. The next prime is 42135211. The reversal of 42135206 is 60253124.

42135206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 10533800 + ... + 10533803.

It is an arithmetic number, because the mean of its divisors is an integer number (15800703).

Almost surely, 2^42135206 is an apocalyptic number.

42135206 is a deficient number, since it is larger than the sum of its proper divisors (21067606).

42135206 is a wasteful number, since it uses less digits than its factorization.

42135206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21067605.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 42135206 is about 6491.1636861198. The cubic root of 42135206 is about 347.9752646796.

The spelling of 42135206 in words is "forty-two million, one hundred thirty-five thousand, two hundred six".