7321115140 has 12 divisors (see below), whose sum is σ = 15374341836. Its totient is φ = 2928446048.

The previous prime is 7321115099. The next prime is 7321115143. The reversal of 7321115140 is 415111237.

It can be written as a sum of positive squares in 2 ways, for example, as 996412356 + 6324702784 = 31566^2 + 79528^2 .

It is not an unprimeable number, because it can be changed into a prime (7321115143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183027859 + ... + 183027898.

It is an arithmetic number, because the mean of its divisors is an integer number (1281195153).

Almost surely, 2^7321115140 is an apocalyptic number.

It is an amenable number.

7321115140 is an abundant number, since it is smaller than the sum of its proper divisors (8053226696).

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

7321115140 is a wasteful number, since it uses less digits than its factorization.

7321115140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366055766 (or 366055764 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 7321115140 is about 85563.5152386810. The cubic root of 7321115140 is about 1941.7459695445.

Adding to 7321115140 its reverse (415111237), we get a palindrome (7736226377).

The spelling of 7321115140 in words is "seven billion, three hundred twenty-one million, one hundred fifteen thousand, one hundred forty".