42010205 has 4 divisors (see below), whose sum is σ = 50412252. Its totient is φ = 33608160.

The previous prime is 42010181. The next prime is 42010211. The reversal of 42010205 is 50201024.

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 25664356 + 16345849 = 5066^2 + 4043^2 .

It is not a de Polignac number, because 42010205 - 2⁶ = 42010141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42010205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201016 + ... + 4201025.

It is an arithmetic number, because the mean of its divisors is an integer number (12603063).

Almost surely, 2^42010205 is an apocalyptic number.

It is an amenable number.

42010205 is a deficient number, since it is larger than the sum of its proper divisors (8402047).

42010205 is an equidigital number, since it uses as much as digits as its factorization.

42010205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402046.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 42010205 is about 6481.5279834311. The cubic root of 42010205 is about 347.6308152659.

Adding to 42010205 its reverse (50201024), we get a palindrome (92211229).

The spelling of 42010205 in words is "forty-two million, ten thousand, two hundred five".