1120071857 has 4 divisors (see below), whose sum is σ = 1122083316. Its totient is φ = 1118060400.

The previous prime is 1120071847. The next prime is 1120071919. The reversal of 1120071857 is 7581700211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7581700211 = 73 ⋅103858907.

It can be written as a sum of positive squares in 2 ways, for example, as 608904976 + 511166881 = 24676^2 + 22609^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120071857 - 2²⁶ = 1052962993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120071817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004894 + ... + 1006007.

It is an arithmetic number, because the mean of its divisors is an integer number (280520829).

Almost surely, 2^1120071857 is an apocalyptic number.

It is an amenable number.

1120071857 is a deficient number, since it is larger than the sum of its proper divisors (2011459).

1120071857 is an equidigital number, since it uses as much as digits as its factorization.

1120071857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011458.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 1120071857 is about 33467.4746134213. The cubic root of 1120071857 is about 1038.5210292434.

The spelling of 1120071857 in words is "one billion, one hundred twenty million, seventy-one thousand, eight hundred fifty-seven".