7143257540 has 24 divisors (see below), whose sum is σ = 15883243992. Its totient is φ = 2689226240.

The previous prime is 7143257533. The next prime is 7143257603. The reversal of 7143257540 is 457523417.

It can be written as a sum of positive squares in 4 ways, for example, as 788935744 + 6354321796 = 28088^2 + 79714^2 .

It is a super-2 number, since 2×7143257540² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7143257494 and 7143257503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10504451 + ... + 10505130.

It is an arithmetic number, because the mean of its divisors is an integer number (661801833).

Almost surely, 2^7143257540 is an apocalyptic number.

It is an amenable number.

7143257540 is an abundant number, since it is smaller than the sum of its proper divisors (8739986452).

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

7143257540 is a wasteful number, since it uses less digits than its factorization.

7143257540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21009607 (or 21009605 counting only the distinct ones).

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

The square root of 7143257540 is about 84517.7942210988. The cubic root of 7143257540 is about 1925.8927699010.

The spelling of 7143257540 in words is "seven billion, one hundred forty-three million, two hundred fifty-seven thousand, five hundred forty".