1423221587 has 2 divisors, whose sum is σ = 1423221588. Its totient is φ = 1423221586.

The previous prime is 1423221557. The next prime is 1423221601. The reversal of 1423221587 is 7851223241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1423221587 - 2¹⁰ = 1423220563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423221557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711610793 + 711610794.

It is an arithmetic number, because the mean of its divisors is an integer number (711610794).

Almost surely, 2^1423221587 is an apocalyptic number.

1423221587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423221587 is an equidigital number, since it uses as much as digits as its factorization.

1423221587 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 1423221587 is about 37725.6091667186. The cubic root of 1423221587 is about 1124.8402306773.

The spelling of 1423221587 in words is "one billion, four hundred twenty-three million, two hundred twenty-one thousand, five hundred eighty-seven".