420852381 has 4 divisors (see below), whose sum is σ = 561136512. Its totient is φ = 280568252.

The previous prime is 420852343. The next prime is 420852389. The reversal of 420852381 is 183258024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420852381 - 2⁹ = 420851869 is a prime.

It is a super-2 number, since 2×420852381² = 354233453186738322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420852389) 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, 70142061 + ... + 70142066.

It is an arithmetic number, because the mean of its divisors is an integer number (140284128).

Almost surely, 2^420852381 is an apocalyptic number.

It is an amenable number.

420852381 is a deficient number, since it is larger than the sum of its proper divisors (140284131).

420852381 is a wasteful number, since it uses less digits than its factorization.

420852381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140284130.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 420852381 is about 20514.6869583720. The cubic root of 420852381 is about 749.3935132529.

The spelling of 420852381 in words is "four hundred twenty million, eight hundred fifty-two thousand, three hundred eighty-one".