42146209 has 8 divisors (see below), whose sum is σ = 48664448. Its totient is φ = 35752320.

The previous prime is 42146207. The next prime is 42146233. The reversal of 42146209 is 90264124.

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

It is a cyclic number.

It is not a de Polignac number, because 42146209 - 2¹ = 42146207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42146207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30357 + ... + 31714.

It is an arithmetic number, because the mean of its divisors is an integer number (6083056).

Almost surely, 2^42146209 is an apocalyptic number.

It is an amenable number.

42146209 is a deficient number, since it is larger than the sum of its proper divisors (6518239).

42146209 is an equidigital number, since it uses as much as digits as its factorization.

42146209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62175.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 42146209 is about 6492.0111675813. The cubic root of 42146209 is about 348.0055516136.

The spelling of 42146209 in words is "forty-two million, one hundred forty-six thousand, two hundred nine".