128360461 has 4 divisors (see below), whose sum is σ = 131345632. Its totient is φ = 125375292.

The previous prime is 128360443. The next prime is 128360473. The reversal of 128360461 is 164063821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164063821 = 17 ⋅9650813.

It is a cyclic number.

It is not a de Polignac number, because 128360461 - 2¹³ = 128352269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128360411) 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, 1492521 + ... + 1492606.

It is an arithmetic number, because the mean of its divisors is an integer number (32836408).

Almost surely, 2^128360461 is an apocalyptic number.

It is an amenable number.

128360461 is a deficient number, since it is larger than the sum of its proper divisors (2985171).

128360461 is an equidigital number, since it uses as much as digits as its factorization.

128360461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985170.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 128360461 is about 11329.6275755207. The cubic root of 128360461 is about 504.4410519936.

It can be divided in two parts, 128360 and 461, that added together give a palindrome (128821).

The spelling of 128360461 in words is "one hundred twenty-eight million, three hundred sixty thousand, four hundred sixty-one".