1420555417 has 4 divisors (see below), whose sum is σ = 1482318720. Its totient is φ = 1358792116.

The previous prime is 1420555391. The next prime is 1420555427. The reversal of 1420555417 is 7145550241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7145550241 = 43 ⋅166175587.

It is a cyclic number.

It is not a de Polignac number, because 1420555417 - 2⁷ = 1420555289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420555427) 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 3 ways as a sum of consecutive naturals, for example, 30881617 + ... + 30881662.

It is an arithmetic number, because the mean of its divisors is an integer number (370579680).

Almost surely, 2^1420555417 is an apocalyptic number.

It is an amenable number.

1420555417 is a deficient number, since it is larger than the sum of its proper divisors (61763303).

1420555417 is an equidigital number, since it uses as much as digits as its factorization.

1420555417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61763302.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 1420555417 is about 37690.2562607367. The cubic root of 1420555417 is about 1124.1373909658.

The spelling of 1420555417 in words is "one billion, four hundred twenty million, five hundred fifty-five thousand, four hundred seventeen".