80212420 has 12 divisors (see below), whose sum is σ = 168446124. Its totient is φ = 32084960.

The previous prime is 80212417. The next prime is 80212423. The reversal of 80212420 is 2421208.

It is an interprime number because it is at equal distance from previous prime (80212417) and next prime (80212423).

It can be written as a sum of positive squares in 2 ways, for example, as 42094144 + 38118276 = 6488^2 + 6174^2 .

It is not an unprimeable number, because it can be changed into a prime (80212423) 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, 2005291 + ... + 2005330.

It is an arithmetic number, because the mean of its divisors is an integer number (14037177).

Almost surely, 2^80212420 is an apocalyptic number.

It is an amenable number.

80212420 is an abundant number, since it is smaller than the sum of its proper divisors (88233704).

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

80212420 is a wasteful number, since it uses less digits than its factorization.

80212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010630 (or 4010628 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 80212420 is about 8956.1386769076. The cubic root of 80212420 is about 431.2679718058.

Adding to 80212420 its reverse (2421208), we get a palindrome (82633628).

The spelling of 80212420 in words is "eighty million, two hundred twelve thousand, four hundred twenty".