128605154 has 4 divisors (see below), whose sum is σ = 192907734. Its totient is φ = 64302576.

The previous prime is 128605033. The next prime is 128605157. The reversal of 128605154 is 451506821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451506821 = 71 ⋅6359251.

It can be written as a sum of positive squares in only one way, i.e., 119137225 + 9467929 = 10915^2 + 3077^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128605154.

It is not an unprimeable number, because it can be changed into a prime (128605157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32151287 + ... + 32151290.

Almost surely, 2^128605154 is an apocalyptic number.

128605154 is a deficient number, since it is larger than the sum of its proper divisors (64302580).

128605154 is an equidigital number, since it uses as much as digits as its factorization.

128605154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64302579.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 128605154 is about 11340.4212443807. The cubic root of 128605154 is about 504.7613864718.

The spelling of 128605154 in words is "one hundred twenty-eight million, six hundred five thousand, one hundred fifty-four".