420435253 has 8 divisors (see below), whose sum is σ = 482988608. Its totient is φ = 358504704.

The previous prime is 420435247. The next prime is 420435269. The reversal of 420435253 is 352534024.

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 420435253 - 2²⁵ = 386880821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420435203) 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, 154251 + ... + 156952.

It is an arithmetic number, because the mean of its divisors is an integer number (60373576).

Almost surely, 2^420435253 is an apocalyptic number.

It is an amenable number.

420435253 is a deficient number, since it is larger than the sum of its proper divisors (62553355).

420435253 is a wasteful number, since it uses less digits than its factorization.

420435253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311403.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 420435253 is about 20504.5178680212. The cubic root of 420435253 is about 749.1458441857.

Adding to 420435253 its reverse (352534024), we get a palindrome (772969277).

The spelling of 420435253 in words is "four hundred twenty million, four hundred thirty-five thousand, two hundred fifty-three".