1424609521 has 2 divisors, whose sum is σ = 1424609522. Its totient is φ = 1424609520.

The previous prime is 1424609519. The next prime is 1424609573. The reversal of 1424609521 is 1259064241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1405425121 + 19184400 = 37489^2 + 4380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424609521 - 2¹ = 1424609519 is a prime.

Together with 1424609519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1424609591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712304760 + 712304761.

It is an arithmetic number, because the mean of its divisors is an integer number (712304761).

Almost surely, 2^1424609521 is an apocalyptic number.

It is an amenable number.

1424609521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424609521 is an equidigital number, since it uses as much as digits as its factorization.

1424609521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1424609521 is about 37743.9998012929. Note that the first 3 decimals coincide. The cubic root of 1424609521 is about 1125.2057621334.

The spelling of 1424609521 in words is "one billion, four hundred twenty-four million, six hundred nine thousand, five hundred twenty-one".