1420129605 has 16 divisors (see below), whose sum is σ = 2276374464. Its totient is φ = 756013440.

The previous prime is 1420129577. The next prime is 1420129643. The reversal of 1420129605 is 5069210241.

It is not a de Polignac number, because 1420129605 - 2²⁴ = 1403352389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78336 + ... + 94745.

It is an arithmetic number, because the mean of its divisors is an integer number (142273404).

Almost surely, 2^1420129605 is an apocalyptic number.

1420129605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420129605 is a deficient number, since it is larger than the sum of its proper divisors (856244859).

1420129605 is a wasteful number, since it uses less digits than its factorization.

1420129605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173636.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1420129605 is about 37684.6070033907. The cubic root of 1420129605 is about 1124.0250595448.

Adding to 1420129605 its reverse (5069210241), we get a palindrome (6489339846).

The spelling of 1420129605 in words is "one billion, four hundred twenty million, one hundred twenty-nine thousand, six hundred five".