128144467 has 8 divisors (see below), whose sum is σ = 139991040. Its totient is φ = 116330760.

The previous prime is 128144461. The next prime is 128144479. The reversal of 128144467 is 764441821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 128144467 - 2³ = 128144459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128144461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334 + ... + 16012.

It is an arithmetic number, because the mean of its divisors is an integer number (17498880).

Almost surely, 2^128144467 is an apocalyptic number.

128144467 is a deficient number, since it is larger than the sum of its proper divisors (11846573).

128144467 is a wasteful number, since it uses less digits than its factorization.

128144467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16433.

The product of its digits is 43008, while the sum is 37.

The square root of 128144467 is about 11320.0912982184. The cubic root of 128144467 is about 504.1579497282.

It can be divided in two parts, 12814446 and 7, that added together give a triangular number (12814453 = T₅₀₆₂).

The spelling of 128144467 in words is "one hundred twenty-eight million, one hundred forty-four thousand, four hundred sixty-seven".