1420100505 has 48 divisors (see below), whose sum is σ = 2576333760. Its totient is φ = 750368448.

The previous prime is 1420100459. The next prime is 1420100519. The reversal of 1420100505 is 5050010241.

It is not a de Polignac number, because 1420100505 - 2⁷ = 1420100377 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127074 + ... + 137796.

It is an arithmetic number, because the mean of its divisors is an integer number (53673620).

Almost surely, 2^1420100505 is an apocalyptic number.

1420100505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420100505 is a deficient number, since it is larger than the sum of its proper divisors (1156233255).

1420100505 is a wasteful number, since it uses less digits than its factorization.

1420100505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10852 (or 10840 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1420100505 is about 37684.2209021229. The cubic root of 1420100505 is about 1124.0173819937.

Adding to 1420100505 its reverse (5050010241), we get a palindrome (6470110746).

The spelling of 1420100505 in words is "one billion, four hundred twenty million, one hundred thousand, five hundred five".