427129 has 4 divisors (see below), whose sum is σ = 431460. Its totient is φ = 422800.

The previous prime is 427117. The next prime is 427151. The reversal of 427129 is 921724.

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 419904 + 7225 = 648^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 427129 - 2⁷ = 427001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427169) 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, 2014 + ... + 2215.

It is an arithmetic number, because the mean of its divisors is an integer number (107865).

2⁴²⁷¹²⁹ is an apocalyptic number.

It is an amenable number.

427129 is a deficient number, since it is larger than the sum of its proper divisors (4331).

427129 is a wasteful number, since it uses less digits than its factorization.

427129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330.

The product of its digits is 1008, while the sum is 25.

The square root of 427129 is about 653.5510691599. The cubic root of 427129 is about 75.3100645149.

The spelling of 427129 in words is "four hundred twenty-seven thousand, one hundred twenty-nine".