42219635 has 4 divisors (see below), whose sum is σ = 50663568. Its totient is φ = 33775704.

The previous prime is 42219629. The next prime is 42219637. The reversal of 42219635 is 53691224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42219635 - 2⁶ = 42219571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42219637) 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, 4221959 + ... + 4221968.

It is an arithmetic number, because the mean of its divisors is an integer number (12665892).

Almost surely, 2^42219635 is an apocalyptic number.

42219635 is a deficient number, since it is larger than the sum of its proper divisors (8443933).

42219635 is an equidigital number, since it uses as much as digits as its factorization.

42219635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8443932.

The product of its digits is 12960, while the sum is 32.

The square root of 42219635 is about 6497.6638109401. The cubic root of 42219635 is about 348.2075296920.

The spelling of 42219635 in words is "forty-two million, two hundred nineteen thousand, six hundred thirty-five".