1420340505 has 32 divisors (see below), whose sum is σ = 2392402176. Its totient is φ = 718147584.

The previous prime is 1420340483. The next prime is 1420340527. The reversal of 1420340505 is 5050430241.

It is an interprime number because it is at equal distance from previous prime (1420340483) and next prime (1420340527).

It is not a de Polignac number, because 1420340505 - 2⁵ = 1420340473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20769 + ... + 57201.

It is an arithmetic number, because the mean of its divisors is an integer number (74762568).

Almost surely, 2^1420340505 is an apocalyptic number.

1420340505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420340505 is a deficient number, since it is larger than the sum of its proper divisors (972061671).

1420340505 is a wasteful number, since it uses less digits than its factorization.

1420340505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36577.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1420340505 is about 37687.4051242587. The cubic root of 1420340505 is about 1124.0806988682.

Adding to 1420340505 its reverse (5050430241), we get a palindrome (6470770746).

The spelling of 1420340505 in words is "one billion, four hundred twenty million, three hundred forty thousand, five hundred five".