128730942 has 24 divisors (see below), whose sum is σ = 288536040. Its totient is φ = 41430480.

The previous prime is 128730929. The next prime is 128730961. The reversal of 128730942 is 249037821.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 128730897 and 128730906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122784 + ... + 123827.

It is an arithmetic number, because the mean of its divisors is an integer number (12022335).

Almost surely, 2^128730942 is an apocalyptic number.

128730942 is an abundant number, since it is smaller than the sum of its proper divisors (159805098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128730942 is a wasteful number, since it uses less digits than its factorization.

128730942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246648 (or 246645 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 128730942 is about 11345.9658910117. The cubic root of 128730942 is about 504.9259009666.

The spelling of 128730942 in words is "one hundred twenty-eight million, seven hundred thirty thousand, nine hundred forty-two".