7442440 has 32 divisors (see below), whose sum is σ = 17138880. Its totient is φ = 2907072.

The previous prime is 7442431. The next prime is 7442453. The reversal of 7442440 is 442447.

7442440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444 + ... + 3883.

It is an arithmetic number, because the mean of its divisors is an integer number (535590).

Almost surely, 2^7442440 is an apocalyptic number.

It is an amenable number.

7442440 is an abundant number, since it is smaller than the sum of its proper divisors (9696440).

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

7442440 is a wasteful number, since it uses less digits than its factorization.

7442440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381 (or 4377 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 7442440 is about 2728.0835764324. The cubic root of 7442440 is about 195.2413404558.

Adding to 7442440 its reverse (442447), we get a palindrome (7884887).

The spelling of 7442440 in words is "seven million, four hundred forty-two thousand, four hundred forty".