7421355740 has 24 divisors (see below), whose sum is σ = 15878903040. Its totient is φ = 2912531648.

The previous prime is 7421355737. The next prime is 7421355761. The reversal of 7421355740 is 475531247.

It is a junction number, because it is equal to n+sod(n) for n = 7421355694 and 7421355703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499580 + ... + 3501699.

It is an arithmetic number, because the mean of its divisors is an integer number (661620960).

Almost surely, 2^7421355740 is an apocalyptic number.

It is an amenable number.

7421355740 is an abundant number, since it is smaller than the sum of its proper divisors (8457547300).

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

7421355740 is a wasteful number, since it uses less digits than its factorization.

7421355740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001341 (or 7001339 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 7421355740 is about 86147.2909614690. The cubic root of 7421355740 is about 1950.5679467736.

Adding to 7421355740 its reverse (475531247), we get a palindrome (7896886987).

The spelling of 7421355740 in words is "seven billion, four hundred twenty-one million, three hundred fifty-five thousand, seven hundred forty".