420169233 has 12 divisors (see below), whose sum is σ = 615785744. Its totient is φ = 254647800.

The previous prime is 420169201. The next prime is 420169279. The reversal of 420169233 is 332961024.

It is not a de Polignac number, because 420169233 - 2⁵ = 420169201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420169233.

It is not an unprimeable number, because it can be changed into a prime (420169333) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 578383 + ... + 579108.

Almost surely, 2^420169233 is an apocalyptic number.

It is an amenable number.

420169233 is a deficient number, since it is larger than the sum of its proper divisors (195616511).

420169233 is a wasteful number, since it uses less digits than its factorization.

420169233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157516 (or 1157505 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 420169233 is about 20498.0299785126. The cubic root of 420169233 is about 748.9878096867.

It can be divided in two parts, 420 and 169233, that added together give a triangular number (169653 = T₅₈₂).

The spelling of 420169233 in words is "four hundred twenty million, one hundred sixty-nine thousand, two hundred thirty-three".