42746209 has 8 divisors (see below), whose sum is σ = 46710720. Its totient is φ = 38794800.

The previous prime is 42746191. The next prime is 42746269. The reversal of 42746209 is 90264724.

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

It is not a de Polignac number, because 42746209 - 2¹¹ = 42744161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42746269) 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, 4332 + ... + 10210.

It is an arithmetic number, because the mean of its divisors is an integer number (5838840).

Almost surely, 2^42746209 is an apocalyptic number.

It is an amenable number.

42746209 is a deficient number, since it is larger than the sum of its proper divisors (3964511).

42746209 is a wasteful number, since it uses less digits than its factorization.

42746209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 42746209 is about 6538.0585038679. The cubic root of 42746209 is about 349.6491968086.

The spelling of 42746209 in words is "forty-two million, seven hundred forty-six thousand, two hundred nine".