42434965 has 4 divisors (see below), whose sum is σ = 50921964. Its totient is φ = 33947968.

The previous prime is 42434921. The next prime is 42434969. The reversal of 42434965 is 56943424.

It is a happy number.

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 13264164 + 29170801 = 3642^2 + 5401^2 .

It is a cyclic number.

It is not a de Polignac number, because 42434965 - 2²⁵ = 8880533 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 (42434969) 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, 4243492 + ... + 4243501.

It is an arithmetic number, because the mean of its divisors is an integer number (12730491).

Almost surely, 2^42434965 is an apocalyptic number.

It is an amenable number.

42434965 is a deficient number, since it is larger than the sum of its proper divisors (8486999).

42434965 is an equidigital number, since it uses as much as digits as its factorization.

42434965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8486998.

The product of its digits is 103680, while the sum is 37.

The square root of 42434965 is about 6514.2125387494. The cubic root of 42434965 is about 348.7985060335.

The spelling of 42434965 in words is "forty-two million, four hundred thirty-four thousand, nine hundred sixty-five".