128146057 has 4 divisors (see below), whose sum is σ = 138003460. Its totient is φ = 118288656.

The previous prime is 128146037. The next prime is 128146093. The reversal of 128146057 is 750641821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750641821 = 1091 ⋅688031.

It can be written as a sum of positive squares in 2 ways, for example, as 50424201 + 77721856 = 7101^2 + 8816^2 .

It is a cyclic number.

It is not a de Polignac number, because 128146057 - 2⁷ = 128145929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128146037) 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, 4928682 + ... + 4928707.

It is an arithmetic number, because the mean of its divisors is an integer number (34500865).

Almost surely, 2^128146057 is an apocalyptic number.

It is an amenable number.

128146057 is a deficient number, since it is larger than the sum of its proper divisors (9857403).

128146057 is an equidigital number, since it uses as much as digits as its factorization.

128146057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857402.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 128146057 is about 11320.1615271161. The cubic root of 128146057 is about 504.1600348952.

Adding to 128146057 its reverse (750641821), we get a palindrome (878787878).

The spelling of 128146057 in words is "one hundred twenty-eight million, one hundred forty-six thousand, fifty-seven".