421129418 has 8 divisors (see below), whose sum is σ = 632806020. Its totient is φ = 210194080.

The previous prime is 421129391. The next prime is 421129427. The reversal of 421129418 is 814921124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 352951369 + 68178049 = 18787^2 + 8257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183893 + ... + 186168.

Almost surely, 2^421129418 is an apocalyptic number.

421129418 is a deficient number, since it is larger than the sum of its proper divisors (211676602).

421129418 is a wasteful number, since it uses less digits than its factorization.

421129418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370632.

The product of its digits is 4608, while the sum is 32.

The square root of 421129418 is about 20521.4380100421. The cubic root of 421129418 is about 749.5579130931.

The spelling of 421129418 in words is "four hundred twenty-one million, one hundred twenty-nine thousand, four hundred eighteen".