42304240 has 40 divisors (see below), whose sum is σ = 107301168. Its totient is φ = 15383040.

The previous prime is 42304237. The next prime is 42304253. The reversal of 42304240 is 4240324.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23157 + ... + 24916.

Almost surely, 2^42304240 is an apocalyptic number.

42304240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42304240 is an abundant number, since it is smaller than the sum of its proper divisors (64996928).

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

42304240 is a wasteful number, since it uses less digits than its factorization.

42304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48097 (or 48091 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42304240 is about 6504.1709694626. The cubic root of 42304240 is about 348.4399684717.

Adding to 42304240 its reverse (4240324), we get a palindrome (46544564).

The spelling of 42304240 in words is "forty-two million, three hundred four thousand, two hundred forty".