128242150 has 12 divisors (see below), whose sum is σ = 238530492. Its totient is φ = 51296840.

The previous prime is 128242141. The next prime is 128242157. The reversal of 128242150 is 51242821.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128242157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1282372 + ... + 1282471.

It is an arithmetic number, because the mean of its divisors is an integer number (19877541).

Almost surely, 2^128242150 is an apocalyptic number.

128242150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128242150 is a deficient number, since it is larger than the sum of its proper divisors (110288342).

128242150 is a wasteful number, since it uses less digits than its factorization.

128242150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564855 (or 2564850 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 128242150 is about 11324.4050616357. The cubic root of 128242150 is about 504.2860217234.

Adding to 128242150 its reverse (51242821), we get a palindrome (179484971).

The spelling of 128242150 in words is "one hundred twenty-eight million, two hundred forty-two thousand, one hundred fifty".