42020395 has 16 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 32994144.

The previous prime is 42020393. The next prime is 42020437. The reversal of 42020395 is 59302024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42020395 - 2¹ = 42020393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42020393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71292 + ... + 71878.

It is an arithmetic number, because the mean of its divisors is an integer number (3210480).

Almost surely, 2^42020395 is an apocalyptic number.

42020395 is a deficient number, since it is larger than the sum of its proper divisors (9347285).

42020395 is a wasteful number, since it uses less digits than its factorization.

42020395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 42020395 is about 6482.3140158434. The cubic root of 42020395 is about 347.6589201167.

The spelling of 42020395 in words is "forty-two million, twenty thousand, three hundred ninety-five".