7121571140 has 12 divisors (see below), whose sum is σ = 14955299436. Its totient is φ = 2848628448.

The previous prime is 7121571113. The next prime is 7121571143. The reversal of 7121571140 is 411751217.

It can be written as a sum of positive squares in 2 ways, for example, as 4524445696 + 2597125444 = 67264^2 + 50962^2 .

It is not an unprimeable number, because it can be changed into a prime (7121571143) 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, 178039259 + ... + 178039298.

It is an arithmetic number, because the mean of its divisors is an integer number (1246274953).

Almost surely, 2^7121571140 is an apocalyptic number.

It is an amenable number.

7121571140 is an abundant number, since it is smaller than the sum of its proper divisors (7833728296).

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

7121571140 is a wasteful number, since it uses less digits than its factorization.

7121571140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356078566 (or 356078564 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 7121571140 is about 84389.4018227408. The cubic root of 7121571140 is about 1923.9418384108.

The spelling of 7121571140 in words is "seven billion, one hundred twenty-one million, five hundred seventy-one thousand, one hundred forty".