1421622043 has 2 divisors, whose sum is σ = 1421622044. Its totient is φ = 1421622042.

The previous prime is 1421622023. The next prime is 1421622061. The reversal of 1421622043 is 3402261241.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3402261241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421622043 is a prime.

It is a super-3 number, since 3×1421622043³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421621999 and 1421622017.

It is not a weakly prime, because it can be changed into another prime (1421622023) 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, 710811021 + 710811022.

It is an arithmetic number, because the mean of its divisors is an integer number (710811022).

Almost surely, 2^1421622043 is an apocalyptic number.

1421622043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421622043 is an equidigital number, since it uses as much as digits as its factorization.

1421622043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1421622043 is about 37704.4034961435. The cubic root of 1421622043 is about 1124.4186739487.

Adding to 1421622043 its reverse (3402261241), we get a palindrome (4823883284).

The spelling of 1421622043 in words is "one billion, four hundred twenty-one million, six hundred twenty-two thousand, forty-three".