42409204 has 24 divisors (see below), whose sum is σ = 75636288. Its totient is φ = 20802240.

The previous prime is 42409187. The next prime is 42409219. The reversal of 42409204 is 40290424.

42409204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90579 + ... + 91045.

It is an arithmetic number, because the mean of its divisors is an integer number (3151512).

Almost surely, 2^42409204 is an apocalyptic number.

It is an amenable number.

42409204 is a deficient number, since it is larger than the sum of its proper divisors (33227084).

42409204 is a wasteful number, since it uses less digits than its factorization.

42409204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42409204 is about 6512.2349466216. The cubic root of 42409204 is about 348.7279100271.

Adding to 42409204 its reverse (40290424), we get a palindrome (82699628).

The spelling of 42409204 in words is "forty-two million, four hundred nine thousand, two hundred four".