128140853 has 2 divisors, whose sum is σ = 128140854. Its totient is φ = 128140852.

The previous prime is 128140823. The next prime is 128140891. The reversal of 128140853 is 358041821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125395204 + 2745649 = 11198^2 + 1657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128140853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128140823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64070426 + 64070427.

It is an arithmetic number, because the mean of its divisors is an integer number (64070427).

Almost surely, 2^128140853 is an apocalyptic number.

It is an amenable number.

128140853 is a deficient number, since it is larger than the sum of its proper divisors (1).

128140853 is an equidigital number, since it uses as much as digits as its factorization.

128140853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 128140853 is about 11319.9316694051. The cubic root of 128140853 is about 504.1532101714.

The spelling of 128140853 in words is "one hundred twenty-eight million, one hundred forty thousand, eight hundred fifty-three".