42669829 has 4 divisors (see below), whose sum is σ = 42748384. Its totient is φ = 42591276.

The previous prime is 42669827. The next prime is 42669859. The reversal of 42669829 is 92896624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42669829 - 2¹ = 42669827 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 (42669827) 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, 38457 + ... + 39550.

It is an arithmetic number, because the mean of its divisors is an integer number (10687096).

Almost surely, 2^42669829 is an apocalyptic number.

It is an amenable number.

42669829 is a deficient number, since it is larger than the sum of its proper divisors (78555).

42669829 is an equidigital number, since it uses as much as digits as its factorization.

42669829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78554.

The product of its digits is 373248, while the sum is 46.

The square root of 42669829 is about 6532.2147086574. The cubic root of 42669829 is about 349.4408186582.

The spelling of 42669829 in words is "forty-two million, six hundred sixty-nine thousand, eight hundred twenty-nine".