80421400 has 24 divisors (see below), whose sum is σ = 186980220. Its totient is φ = 32168480.

The previous prime is 80421391. The next prime is 80421401. The reversal of 80421400 is 412408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200854 + ... + 201253.

Almost surely, 2^80421400 is an apocalyptic number.

It is an amenable number.

80421400 is an abundant number, since it is smaller than the sum of its proper divisors (106558820).

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

80421400 is a wasteful number, since it uses less digits than its factorization.

80421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402123 (or 402114 counting only the distinct ones).

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

The square root of 80421400 is about 8967.7979459843. The cubic root of 80421400 is about 431.6421791257.

Adding to 80421400 its reverse (412408), we get a palindrome (80833808).

The spelling of 80421400 in words is "eighty million, four hundred twenty-one thousand, four hundred".