1420655409 has 16 divisors (see below), whose sum is σ = 2133508800. Its totient is φ = 934128288.

The previous prime is 1420655399. The next prime is 1420655419. The reversal of 1420655409 is 9045560241.

It is an interprime number because it is at equal distance from previous prime (1420655399) and next prime (1420655419).

It is not a de Polignac number, because 1420655409 - 2⁵ = 1420655377 is a prime.

It is a super-2 number, since 2×1420655409² = 4036523582241914562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1420655419) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 358419 + ... + 362360.

It is an arithmetic number, because the mean of its divisors is an integer number (133344300).

Almost surely, 2^1420655409 is an apocalyptic number.

It is an amenable number.

1420655409 is a deficient number, since it is larger than the sum of its proper divisors (712853391).

1420655409 is an equidigital number, since it uses as much as digits as its factorization.

1420655409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720861 (or 720855 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1420655409 is about 37691.5827340800. The cubic root of 1420655409 is about 1124.1637661210.

The spelling of 1420655409 in words is "one billion, four hundred twenty million, six hundred fifty-five thousand, four hundred nine".