1420116557 has 2 divisors, whose sum is σ = 1420116558. Its totient is φ = 1420116556.

The previous prime is 1420116553. The next prime is 1420116583. The reversal of 1420116557 is 7556110241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416317956 + 3798601 = 37634^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420116557 - 2² = 1420116553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420116553) by changing a digit.

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 as a sum of consecutive naturals, namely, 710058278 + 710058279.

It is an arithmetic number, because the mean of its divisors is an integer number (710058279).

Almost surely, 2^1420116557 is an apocalyptic number.

It is an amenable number.

1420116557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420116557 is an equidigital number, since it uses as much as digits as its factorization.

1420116557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1420116557 is about 37684.4338819094. The cubic root of 1420116557 is about 1124.0216170600.

Adding to 1420116557 its reverse (7556110241), we get a palindrome (8976226798).

The spelling of 1420116557 in words is "one billion, four hundred twenty million, one hundred sixteen thousand, five hundred fifty-seven".