80121204 has 96 divisors (see below), whose sum is σ = 222163200. Its totient is φ = 24969600.

The previous prime is 80121193. The next prime is 80121211. The reversal of 80121204 is 40212108.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 530529 + ... + 530679.

It is an arithmetic number, because the mean of its divisors is an integer number (2314200).

Almost surely, 2^80121204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80121204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111081600).

80121204 is an abundant number, since it is smaller than the sum of its proper divisors (142041996).

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

80121204 is a wasteful number, since it uses less digits than its factorization.

80121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 80121204 is about 8951.0448552110. The cubic root of 80121204 is about 431.1044332897.

It can be divided in two parts, 8012 and 1204, that added together give a square (9216 = 96²).

The spelling of 80121204 in words is "eighty million, one hundred twenty-one thousand, two hundred four".