128202943 has 8 divisors (see below), whose sum is σ = 145938816. Its totient is φ = 111480600.

The previous prime is 128202931. The next prime is 128202973. The reversal of 128202943 is 349202821.

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

It is not a de Polignac number, because 128202943 - 2⁵ = 128202911 is a prime.

It is a super-2 number, since 2×128202943² = 32871989187722498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128202973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253113 + ... + 253618.

It is an arithmetic number, because the mean of its divisors is an integer number (18242352).

Almost surely, 2^128202943 is an apocalyptic number.

128202943 is a deficient number, since it is larger than the sum of its proper divisors (17735873).

128202943 is a wasteful number, since it uses less digits than its factorization.

128202943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506765.

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

The square root of 128202943 is about 11322.6738449891. The cubic root of 128202943 is about 504.2346253162.

The spelling of 128202943 in words is "one hundred twenty-eight million, two hundred two thousand, nine hundred forty-three".