1432427221 has 2 divisors, whose sum is σ = 1432427222. Its totient is φ = 1432427220.

The previous prime is 1432427219. The next prime is 1432427239. The reversal of 1432427221 is 1227242341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954130321 + 478296900 = 30889^2 + 21870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1432427221 - 2¹ = 1432427219 is a prime.

Together with 1432427219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1432427221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1432427251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 716213610 + 716213611.

It is an arithmetic number, because the mean of its divisors is an integer number (716213611).

Almost surely, 2^1432427221 is an apocalyptic number.

It is an amenable number.

1432427221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1432427221 is an equidigital number, since it uses as much as digits as its factorization.

1432427221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 1432427221 is about 37847.4202687581. The cubic root of 1432427221 is about 1127.2602383977.

Adding to 1432427221 its reverse (1227242341), we get a palindrome (2659669562).

It can be divided in two parts, 143 and 2427221, that added together give a square (2427364 = 1558²).

The spelling of 1432427221 in words is "one billion, four hundred thirty-two million, four hundred twenty-seven thousand, two hundred twenty-one".