420149803 has 4 divisors (see below), whose sum is σ = 420203088. Its totient is φ = 420096520.

The previous prime is 420149783. The next prime is 420149827. The reversal of 420149803 is 308941024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420149803 - 2⁵ = 420149771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420149833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12208 + ... + 31453.

It is an arithmetic number, because the mean of its divisors is an integer number (105050772).

Almost surely, 2^420149803 is an apocalyptic number.

420149803 is a deficient number, since it is larger than the sum of its proper divisors (53285).

420149803 is an equidigital number, since it uses as much as digits as its factorization.

420149803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53284.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 420149803 is about 20497.5560250484. The cubic root of 420149803 is about 748.9762642931.

The spelling of 420149803 in words is "four hundred twenty million, one hundred forty-nine thousand, eight hundred three".