420934281 has 8 divisors (see below), whose sum is σ = 565342944. Its totient is φ = 278574240.

The previous prime is 420934277. The next prime is 420934301. The reversal of 420934281 is 182439024.

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

It is not a de Polignac number, because 420934281 - 2² = 420934277 is a prime.

It is a super-2 number, since 2×420934281² = 354371337841973922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420934271) 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, 511675 + ... + 512496.

It is an arithmetic number, because the mean of its divisors is an integer number (70667868).

Almost surely, 2^420934281 is an apocalyptic number.

It is an amenable number.

420934281 is a deficient number, since it is larger than the sum of its proper divisors (144408663).

420934281 is a wasteful number, since it uses less digits than its factorization.

420934281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024311.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 420934281 is about 20516.6829921408. The cubic root of 420934281 is about 749.4421220213.

The spelling of 420934281 in words is "four hundred twenty million, nine hundred thirty-four thousand, two hundred eighty-one".