9420240 has 40 divisors (see below), whose sum is σ = 29203488. Its totient is φ = 2512000.

The previous prime is 9420239. The next prime is 9420241. The reversal of 9420240 is 420249.

It is an interprime number because it is at equal distance from previous prime (9420239) and next prime (9420241).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9420241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19386 + ... + 19865.

Almost surely, 2^9420240 is an apocalyptic number.

It is an amenable number.

9420240 is an abundant number, since it is smaller than the sum of its proper divisors (19783248).

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

9420240 is a wasteful number, since it uses less digits than its factorization.

9420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39267 (or 39261 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 9420240 is about 3069.2409485083. The cubic root of 9420240 is about 211.1967946024.

Adding to 9420240 its reverse (420249), we get a palindrome (9840489).

The spelling of 9420240 in words is "nine million, four hundred twenty thousand, two hundred forty".