427211641 has 4 divisors (see below), whose sum is σ = 435272292. Its totient is φ = 419150992.

The previous prime is 427211633. The next prime is 427211647. The reversal of 427211641 is 146112724.

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 392872041 + 34339600 = 19821^2 + 5860^2 .

It is a cyclic number.

It is not a de Polignac number, because 427211641 - 2³ = 427211633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427211647) 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, 4030246 + ... + 4030351.

It is an arithmetic number, because the mean of its divisors is an integer number (108818073).

Almost surely, 2^427211641 is an apocalyptic number.

It is an amenable number.

427211641 is a deficient number, since it is larger than the sum of its proper divisors (8060651).

427211641 is an equidigital number, since it uses as much as digits as its factorization.

427211641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060650.

The product of its digits is 2688, while the sum is 28.

The square root of 427211641 is about 20669.0986982984. The cubic root of 427211641 is about 753.1492120359.

The spelling of 427211641 in words is "four hundred twenty-seven million, two hundred eleven thousand, six hundred forty-one".