7857144143 has 4 divisors (see below), whose sum is σ = 7879657800. Its totient is φ = 7834630488.

The previous prime is 7857144079. The next prime is 7857144151. The reversal of 7857144143 is 3414417587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7857144143 - 2⁶ = 7857144079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7857144094 and 7857144103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7857144193) 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, 11256305 + ... + 11257002.

It is an arithmetic number, because the mean of its divisors is an integer number (1969914450).

Almost surely, 2^7857144143 is an apocalyptic number.

7857144143 is a deficient number, since it is larger than the sum of its proper divisors (22513657).

7857144143 is a wasteful number, since it uses less digits than its factorization.

7857144143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22513656.

The product of its digits is 376320, while the sum is 44.

The square root of 7857144143 is about 88640.5332960040. The cubic root of 7857144143 is about 1988.0237733940.

The spelling of 7857144143 in words is "seven billion, eight hundred fifty-seven million, one hundred forty-four thousand, one hundred forty-three".