42509304 has 24 divisors (see below), whose sum is σ = 115129560. Its totient is φ = 14169744.

The previous prime is 42509297. The next prime is 42509317. The reversal of 42509304 is 40390524.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295132 + ... + 295275.

It is an arithmetic number, because the mean of its divisors is an integer number (4797065).

Almost surely, 2^42509304 is an apocalyptic number.

It is an amenable number.

42509304 is an abundant number, since it is smaller than the sum of its proper divisors (72620256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42509304 is a wasteful number, since it uses less digits than its factorization.

42509304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590419 (or 590412 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42509304 is about 6519.9159503785. The cubic root of 42509304 is about 349.0020661996.

Adding to 42509304 its reverse (40390524), we get a palindrome (82899828).

The spelling of 42509304 in words is "forty-two million, five hundred nine thousand, three hundred four".