42020205 has 8 divisors (see below), whose sum is σ = 67232352. Its totient is φ = 22410768.

The previous prime is 42020201. The next prime is 42020207. The reversal of 42020205 is 50202024.

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

It is not a de Polignac number, because 42020205 - 2² = 42020201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 2801347 = 42020205 / (4 + 2 + 0 + 2 + 0 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020201) 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, 1400659 + ... + 1400688.

It is an arithmetic number, because the mean of its divisors is an integer number (8404044).

Almost surely, 2^42020205 is an apocalyptic number.

It is an amenable number.

42020205 is a deficient number, since it is larger than the sum of its proper divisors (25212147).

42020205 is a wasteful number, since it uses less digits than its factorization.

42020205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801355.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 42020205 is about 6482.2993605664. The cubic root of 42020205 is about 347.6583961228.

Adding to 42020205 its reverse (50202024), we get a palindrome (92222229).

The spelling of 42020205 in words is "forty-two million, twenty thousand, two hundred five".