7420740 has 48 divisors (see below), whose sum is σ = 20896512. Its totient is φ = 1967616.

The previous prime is 7420739. The next prime is 7420741. The reversal of 7420740 is 470247.

It is an interprime number because it is at equal distance from previous prime (7420739) and next prime (7420741).

It is a self number, because there is not a number n which added to its sum of digits gives 7420740.

It is not an unprimeable number, because it can be changed into a prime (7420741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20037 + ... + 20403.

It is an arithmetic number, because the mean of its divisors is an integer number (435344).

Almost surely, 2^7420740 is an apocalyptic number.

It is an amenable number.

7420740 is an abundant number, since it is smaller than the sum of its proper divisors (13475772).

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

7420740 is a wasteful number, since it uses less digits than its factorization.

7420740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7420740 is about 2724.1035222620. The cubic root of 7420740 is about 195.0513999940.

Adding to 7420740 its reverse (470247), we get a palindrome (7890987).

It can be divided in two parts, 74207 and 40, that added together give a palindrome (74247).

The spelling of 7420740 in words is "seven million, four hundred twenty thousand, seven hundred forty".