427212529 has 4 divisors (see below), whose sum is σ = 431132020. Its totient is φ = 423293040.

The previous prime is 427212523. The next prime is 427212607. The reversal of 427212529 is 925212724.

It is a happy number.

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 323172529 + 104040000 = 17977^2 + 10200^2 .

It is a cyclic number.

It is not a de Polignac number, because 427212529 - 2³ = 427212521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 427212494 and 427212503.

It is not an unprimeable number, because it can be changed into a prime (427212521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1959582 + ... + 1959799.

It is an arithmetic number, because the mean of its divisors is an integer number (107783005).

Almost surely, 2^427212529 is an apocalyptic number.

It is an amenable number.

427212529 is a deficient number, since it is larger than the sum of its proper divisors (3919491).

427212529 is a wasteful number, since it uses less digits than its factorization.

427212529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919490.

The product of its digits is 20160, while the sum is 34.

The square root of 427212529 is about 20669.1201796303. The cubic root of 427212529 is about 753.1497338663.

The spelling of 427212529 in words is "four hundred twenty-seven million, two hundred twelve thousand, five hundred twenty-nine".