128143545 has 16 divisors (see below), whose sum is σ = 206597952. Its totient is φ = 67820480.

The previous prime is 128143537. The next prime is 128143549. The reversal of 128143545 is 545341821.

It is not a de Polignac number, because 128143545 - 2³ = 128143537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128143549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30642 + ... + 34571.

It is an arithmetic number, because the mean of its divisors is an integer number (12912372).

Almost surely, 2^128143545 is an apocalyptic number.

128143545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128143545 is a deficient number, since it is larger than the sum of its proper divisors (78454407).

128143545 is a wasteful number, since it uses less digits than its factorization.

128143545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65352.

The product of its digits is 19200, while the sum is 33.

The square root of 128143545 is about 11320.0505740920. The cubic root of 128143545 is about 504.1567405858.

The spelling of 128143545 in words is "one hundred twenty-eight million, one hundred forty-three thousand, five hundred forty-five".