420003381 has 8 divisors (see below), whose sum is σ = 640005184. Its totient is φ = 240001920.

The previous prime is 420003347. The next prime is 420003431. The reversal of 420003381 is 183300024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420003381 - 2¹⁷ = 419872309 is a prime.

It is a super-2 number, since 2×420003381² = 352805680102862322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 20000161 = 420003381 / (4 + 2 + 0 + 0 + 0 + 3 + 3 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420003281) 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, 10000060 + ... + 10000101.

It is an arithmetic number, because the mean of its divisors is an integer number (80000648).

Almost surely, 2^420003381 is an apocalyptic number.

It is an amenable number.

420003381 is a deficient number, since it is larger than the sum of its proper divisors (220001803).

420003381 is a wasteful number, since it uses less digits than its factorization.

420003381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000171.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 420003381 is about 20493.9840197069. The cubic root of 420003381 is about 748.8892482305.

The spelling of 420003381 in words is "four hundred twenty million, three thousand, three hundred eighty-one".