420409259 has 8 divisors (see below), whose sum is σ = 448936320. Its totient is φ = 392817600.

The previous prime is 420409183. The next prime is 420409267. The reversal of 420409259 is 952904024.

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

It is a cyclic number.

It is not a de Polignac number, because 420409259 - 2¹² = 420405163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420409289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232922 + ... + 234719.

It is an arithmetic number, because the mean of its divisors is an integer number (56117040).

Almost surely, 2^420409259 is an apocalyptic number.

420409259 is a deficient number, since it is larger than the sum of its proper divisors (28527061).

420409259 is a wasteful number, since it uses less digits than its factorization.

420409259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467701.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 420409259 is about 20503.8839979161. The cubic root of 420409259 is about 749.1304048695.

The spelling of 420409259 in words is "four hundred twenty million, four hundred nine thousand, two hundred fifty-nine".