1416811421 has 2 divisors, whose sum is σ = 1416811422. Its totient is φ = 1416811420.

The previous prime is 1416811369. The next prime is 1416811471. The reversal of 1416811421 is 1241186141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900840196 + 515971225 = 30014^2 + 22715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1416811421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1416811471) 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 as a sum of consecutive naturals, namely, 708405710 + 708405711.

It is an arithmetic number, because the mean of its divisors is an integer number (708405711).

Almost surely, 2^1416811421 is an apocalyptic number.

It is an amenable number.

1416811421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1416811421 is an equidigital number, since it uses as much as digits as its factorization.

1416811421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 29.

The square root of 1416811421 is about 37640.5555352203. Note that the first 4 decimals coincide. The cubic root of 1416811421 is about 1123.1489351384.

Adding to 1416811421 its reverse (1241186141), we get a palindrome (2657997562).

The spelling of 1416811421 in words is "one billion, four hundred sixteen million, eight hundred eleven thousand, four hundred twenty-one".