1421534005 has 4 divisors (see below), whose sum is σ = 1705840812. Its totient is φ = 1137227200.

The previous prime is 1421533961. The next prime is 1421534027. The reversal of 1421534005 is 5004351241.

It is a happy number.

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 317766276 + 1103767729 = 17826^2 + 33223^2 .

It is not a de Polignac number, because 1421534005 - 2⁷ = 1421533877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 142153396 + ... + 142153405.

It is an arithmetic number, because the mean of its divisors is an integer number (426460203).

Almost surely, 2^1421534005 is an apocalyptic number.

It is an amenable number.

1421534005 is a deficient number, since it is larger than the sum of its proper divisors (284306807).

1421534005 is an equidigital number, since it uses as much as digits as its factorization.

1421534005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284306806.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1421534005 is about 37703.2360017015. The cubic root of 1421534005 is about 1124.3954625250.

Adding to 1421534005 its reverse (5004351241), we get a palindrome (6425885246).

The spelling of 1421534005 in words is "one billion, four hundred twenty-one million, five hundred thirty-four thousand, five".