42452065 has 4 divisors (see below), whose sum is σ = 50942484. Its totient is φ = 33961648.

The previous prime is 42452063. The next prime is 42452083. The reversal of 42452065 is 56025424.

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 25411681 + 17040384 = 5041^2 + 4128^2 .

It is a cyclic number.

It is not a de Polignac number, because 42452065 - 2¹ = 42452063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42452063) 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 3 ways as a sum of consecutive naturals, for example, 4245202 + ... + 4245211.

It is an arithmetic number, because the mean of its divisors is an integer number (12735621).

Almost surely, 2^42452065 is an apocalyptic number.

It is an amenable number.

42452065 is a deficient number, since it is larger than the sum of its proper divisors (8490419).

42452065 is an equidigital number, since it uses as much as digits as its factorization.

42452065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490418.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 42452065 is about 6515.5249212938. The cubic root of 42452065 is about 348.8453514708.

Adding to 42452065 its reverse (56025424), we get a palindrome (98477489).

The spelling of 42452065 in words is "forty-two million, four hundred fifty-two thousand, sixty-five".