420354681 has 16 divisors (see below), whose sum is σ = 580339200. Its totient is φ = 270321408.

The previous prime is 420354679. The next prime is 420354691. The reversal of 420354681 is 186453024.

It is not a de Polignac number, because 420354681 - 2¹ = 420354679 is a prime.

It is a super-2 number, since 2×420354681² = 353396115677223522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420354611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153240 + ... + 155958.

It is an arithmetic number, because the mean of its divisors is an integer number (36271200).

Almost surely, 2^420354681 is an apocalyptic number.

It is an amenable number.

420354681 is a deficient number, since it is larger than the sum of its proper divisors (159984519).

420354681 is a wasteful number, since it uses less digits than its factorization.

420354681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 420354681 is about 20502.5530361465. The cubic root of 420354681 is about 749.0979858177.

The spelling of 420354681 in words is "four hundred twenty million, three hundred fifty-four thousand, six hundred eighty-one".