420233505 has 16 divisors (see below), whose sum is σ = 675791424. Its totient is φ = 222985280.

The previous prime is 420233497. The next prime is 420233537. The reversal of 420233505 is 505332024.

It is not a de Polignac number, because 420233505 - 2³ = 420233497 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68151 + ... + 74060.

It is an arithmetic number, because the mean of its divisors is an integer number (42236964).

Almost surely, 2^420233505 is an apocalyptic number.

It is an amenable number.

420233505 is a deficient number, since it is larger than the sum of its proper divisors (255557919).

420233505 is a wasteful number, since it uses less digits than its factorization.

420233505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142416.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 420233505 is about 20499.5976789790. The cubic root of 420233505 is about 749.0259978629.

Adding to 420233505 its reverse (505332024), we get a palindrome (925565529).

The spelling of 420233505 in words is "four hundred twenty million, two hundred thirty-three thousand, five hundred five".