128321202 has 48 divisors (see below), whose sum is σ = 279129312. Its totient is φ = 39298560.

The previous prime is 128321197. The next prime is 128321243. The reversal of 128321202 is 202123821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73702 + ... + 75422.

It is an arithmetic number, because the mean of its divisors is an integer number (5815194).

Almost surely, 2^128321202 is an apocalyptic number.

128321202 is an abundant number, since it is smaller than the sum of its proper divisors (150808110).

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

128321202 is a wasteful number, since it uses less digits than its factorization.

128321202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 128321202 is about 11327.8948618002. The cubic root of 128321202 is about 504.3896190459.

The spelling of 128321202 in words is "one hundred twenty-eight million, three hundred twenty-one thousand, two hundred two".