128245142 has 8 divisors (see below), whose sum is σ = 192423816. Its totient is φ = 64103872.

The previous prime is 128245141. The next prime is 128245151. The reversal of 128245142 is 241542821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128245141) 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, 1958 + ... + 16134.

It is an arithmetic number, because the mean of its divisors is an integer number (24052977).

Almost surely, 2^128245142 is an apocalyptic number.

128245142 is a deficient number, since it is larger than the sum of its proper divisors (64178674).

128245142 is a wasteful number, since it uses less digits than its factorization.

128245142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18702.

The product of its digits is 5120, while the sum is 29.

The square root of 128245142 is about 11324.5371649353. The cubic root of 128245142 is about 504.2899435022.

Adding to 128245142 its reverse (241542821), we get a palindrome (369787963).

The spelling of 128245142 in words is "one hundred twenty-eight million, two hundred forty-five thousand, one hundred forty-two".