429981281 has 4 divisors (see below), whose sum is σ = 430084500. Its totient is φ = 429878064.

The previous prime is 429981271. The next prime is 429981311. The reversal of 429981281 is 182189924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206209600 + 223771681 = 14360^2 + 14959^2 .

It is a cyclic number.

It is not a de Polignac number, because 429981281 - 2¹⁴ = 429964897 is a prime.

It is a super-2 number, since 2×429981281² = 369767804020801922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (429981271) 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, 45086 + ... + 53783.

It is an arithmetic number, because the mean of its divisors is an integer number (107521125).

Almost surely, 2^429981281 is an apocalyptic number.

It is an amenable number.

429981281 is a deficient number, since it is larger than the sum of its proper divisors (103219).

429981281 is an equidigital number, since it uses as much as digits as its factorization.

429981281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103218.

The product of its digits is 82944, while the sum is 44.

The square root of 429981281 is about 20735.9899932460. The cubic root of 429981281 is about 754.7732787070.

The spelling of 429981281 in words is "four hundred twenty-nine million, nine hundred eighty-one thousand, two hundred eighty-one".