1420369505 has 8 divisors (see below), whose sum is σ = 1750509672. Its totient is φ = 1105584768.

The previous prime is 1420369493. The next prime is 1420369513. The reversal of 1420369505 is 5059630241.

It can be written as a sum of positive squares in 4 ways, for example, as 502521889 + 917847616 = 22417^2 + 30296^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1420369505 - 2⁶ = 1420369441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3838652 + ... + 3839021.

It is an arithmetic number, because the mean of its divisors is an integer number (218813709).

Almost surely, 2^1420369505 is an apocalyptic number.

It is an amenable number.

1420369505 is a deficient number, since it is larger than the sum of its proper divisors (330140167).

1420369505 is an equidigital number, since it uses as much as digits as its factorization.

1420369505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7677715.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1420369505 is about 37687.7898662153. The cubic root of 1420369505 is about 1124.0883491742.

Adding to 1420369505 its reverse (5059630241), we get a palindrome (6479999746).

The spelling of 1420369505 in words is "one billion, four hundred twenty million, three hundred sixty-nine thousand, five hundred five".