427421320 has 16 divisors (see below), whose sum is σ = 961698060. Its totient is φ = 170968512.

The previous prime is 427421317. The next prime is 427421329. The reversal of 427421320 is 23124724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 421973764 + 5447556 = 20542^2 + 2334^2 .

It is not an unprimeable number, because it can be changed into a prime (427421329) 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, 5342727 + ... + 5342806.

Almost surely, 2^427421320 is an apocalyptic number.

427421320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427421320 is an abundant number, since it is smaller than the sum of its proper divisors (534276740).

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

427421320 is a wasteful number, since it uses less digits than its factorization.

427421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685544 (or 10685540 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 427421320 is about 20674.1703582030. The cubic root of 427421320 is about 753.2724091662.

The spelling of 427421320 in words is "four hundred twenty-seven million, four hundred twenty-one thousand, three hundred twenty".