1427853221 has 2 divisors, whose sum is σ = 1427853222. Its totient is φ = 1427853220.

The previous prime is 1427853191. The next prime is 1427853223. The reversal of 1427853221 is 1223587241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1330060900 + 97792321 = 36470^2 + 9889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427853221 - 2⁶ = 1427853157 is a prime.

Together with 1427853223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427853223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713926610 + 713926611.

It is an arithmetic number, because the mean of its divisors is an integer number (713926611).

Almost surely, 2^1427853221 is an apocalyptic number.

It is an amenable number.

1427853221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427853221 is an equidigital number, since it uses as much as digits as its factorization.

1427853221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 1427853221 is about 37786.9451133589. The cubic root of 1427853221 is about 1126.0591101961.

It can be divided in two parts, 1427853 and 221, that multiplied together give a palindrome (315555513).

The spelling of 1427853221 in words is "one billion, four hundred twenty-seven million, eight hundred fifty-three thousand, two hundred twenty-one".