42235285 has 4 divisors (see below), whose sum is σ = 50682348. Its totient is φ = 33788224.

The previous prime is 42235283. The next prime is 42235307. The reversal of 42235285 is 58253224.

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 13010449 + 29224836 = 3607^2 + 5406^2 .

It is a cyclic number.

It is not a de Polignac number, because 42235285 - 2¹ = 42235283 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 (42235283) 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, 4223524 + ... + 4223533.

It is an arithmetic number, because the mean of its divisors is an integer number (12670587).

Almost surely, 2^42235285 is an apocalyptic number.

It is an amenable number.

42235285 is a deficient number, since it is larger than the sum of its proper divisors (8447063).

42235285 is an equidigital number, since it uses as much as digits as its factorization.

42235285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8447062.

The product of its digits is 19200, while the sum is 31.

The square root of 42235285 is about 6498.8679783482. The cubic root of 42235285 is about 348.2505489700.

The spelling of 42235285 in words is "forty-two million, two hundred thirty-five thousand, two hundred eighty-five".