128101345 has 8 divisors (see below), whose sum is σ = 153818280. Its totient is φ = 102416640.

The previous prime is 128101339. The next prime is 128101361. The reversal of 128101345 is 543101821.

It can be written as a sum of positive squares in 4 ways, for example, as 8242641 + 119858704 = 2871^2 + 10948^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128101345 - 2⁵ = 128101313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785 + ... + 16105.

It is an arithmetic number, because the mean of its divisors is an integer number (19227285).

Almost surely, 2^128101345 is an apocalyptic number.

It is an amenable number.

128101345 is a deficient number, since it is larger than the sum of its proper divisors (25716935).

128101345 is a wasteful number, since it uses less digits than its factorization.

128101345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16115.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 128101345 is about 11318.1864713389. The cubic root of 128101345 is about 504.1013918482.

The spelling of 128101345 in words is "one hundred twenty-eight million, one hundred one thousand, three hundred forty-five".