421713279 has 48 divisors (see below), whose sum is σ = 670086144. Its totient is φ = 254016000.

The previous prime is 421713247. The next prime is 421713317. The reversal of 421713279 is 972317124.

It is not a de Polignac number, because 421713279 - 2⁵ = 421713247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421313279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1500619 + ... + 1500899.

It is an arithmetic number, because the mean of its divisors is an integer number (13960128).

Almost surely, 2^421713279 is an apocalyptic number.

421713279 is a deficient number, since it is larger than the sum of its proper divisors (248372865).

421713279 is a wasteful number, since it uses less digits than its factorization.

421713279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 525 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 421713279 is about 20535.6587184341. The cubic root of 421713279 is about 749.9041530850.

The spelling of 421713279 in words is "four hundred twenty-one million, seven hundred thirteen thousand, two hundred seventy-nine".