42738205 has 4 divisors (see below), whose sum is σ = 51285852. Its totient is φ = 34190560.

The previous prime is 42738203. The next prime is 42738211. The reversal of 42738205 is 50283724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29474041 + 13264164 = 5429^2 + 3642^2 .

It is not a de Polignac number, because 42738205 - 2¹ = 42738203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42738203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4273816 + ... + 4273825.

It is an arithmetic number, because the mean of its divisors is an integer number (12821463).

Almost surely, 2^42738205 is an apocalyptic number.

It is an amenable number.

42738205 is a deficient number, since it is larger than the sum of its proper divisors (8547647).

42738205 is an equidigital number, since it uses as much as digits as its factorization.

42738205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8547646.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 42738205 is about 6537.4463668928. The cubic root of 42738205 is about 349.6273721296.

The spelling of 42738205 in words is "forty-two million, seven hundred thirty-eight thousand, two hundred five".