7420656140 has 24 divisors (see below), whose sum is σ = 15877406160. Its totient is φ = 2912257088.

The previous prime is 7420656137. The next prime is 7420656167. The reversal of 7420656140 is 416560247.

It is a super-2 number, since 2×7420656140² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7420656140.

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, 3499250 + ... + 3501369.

It is an arithmetic number, because the mean of its divisors is an integer number (661558590).

Almost surely, 2^7420656140 is an apocalyptic number.

It is an amenable number.

7420656140 is an abundant number, since it is smaller than the sum of its proper divisors (8456750020).

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

7420656140 is a wasteful number, since it uses less digits than its factorization.

7420656140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7000681 (or 7000679 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 7420656140 is about 86143.2303782485. The cubic root of 7420656140 is about 1950.5066524825.

The spelling of 7420656140 in words is "seven billion, four hundred twenty million, six hundred fifty-six thousand, one hundred forty".