420020003 has 8 divisors (see below), whose sum is σ = 478937088. Its totient is φ = 364904064.

The previous prime is 420019993. The next prime is 420020009. The reversal of 420020003 is 300020024.

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 420020003 - 2⁴ = 420019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420020009) 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, 950051 + ... + 950492.

It is an arithmetic number, because the mean of its divisors is an integer number (59867136).

Almost surely, 2^420020003 is an apocalyptic number.

420020003 is a deficient number, since it is larger than the sum of its proper divisors (58917085).

420020003 is a wasteful number, since it uses less digits than its factorization.

420020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900573.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 420020003 is about 20494.3895493376. The cubic root of 420020003 is about 748.8991274152.

Adding to 420020003 its reverse (300020024), we get a palindrome (720040027).

The spelling of 420020003 in words is "four hundred twenty million, twenty thousand, three".