421554130 has 16 divisors (see below), whose sum is σ = 759167640. Its totient is φ = 168539392.

The previous prime is 421554127. The next prime is 421554131. The reversal of 421554130 is 31455124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 363169249 + 58384881 = 19057^2 + 7641^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421554095 and 421554104.

It is not an unprimeable number, because it can be changed into a prime (421554131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13962 + ... + 32218.

Almost surely, 2^421554130 is an apocalyptic number.

421554130 is a deficient number, since it is larger than the sum of its proper divisors (337613510).

421554130 is a wasteful number, since it uses less digits than its factorization.

421554130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20573.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 421554130 is about 20531.7834101181. The cubic root of 421554130 is about 749.8098065875.

The spelling of 421554130 in words is "four hundred twenty-one million, five hundred fifty-four thousand, one hundred thirty".