421107730 has 32 divisors (see below), whose sum is σ = 790145856. Its totient is φ = 161434944.

The previous prime is 421107691. The next prime is 421107779. The reversal of 421107730 is 37701124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421107695 and 421107704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16297 + ... + 33283.

It is an arithmetic number, because the mean of its divisors is an integer number (24692058).

Almost surely, 2^421107730 is an apocalyptic number.

421107730 is a deficient number, since it is larger than the sum of its proper divisors (369038126).

421107730 is a wasteful number, since it uses less digits than its factorization.

421107730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17098.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 421107730 is about 20520.9095802306. The cubic root of 421107730 is about 749.5450455592.

Adding to 421107730 its reverse (37701124), we get a palindrome (458808854).

The spelling of 421107730 in words is "four hundred twenty-one million, one hundred seven thousand, seven hundred thirty".