1421622061 has 2 divisors, whose sum is σ = 1421622062. Its totient is φ = 1421622060.

The previous prime is 1421622043. The next prime is 1421622067. The reversal of 1421622061 is 1602261241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130237161 + 291384900 = 33619^2 + 17070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421622061 - 2²⁷ = 1287404333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421622067) 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, 710811030 + 710811031.

It is an arithmetic number, because the mean of its divisors is an integer number (710811031).

Almost surely, 2^1421622061 is an apocalyptic number.

It is an amenable number.

1421622061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421622061 is an equidigital number, since it uses as much as digits as its factorization.

1421622061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1421622061 is about 37704.4037348424. The cubic root of 1421622061 is about 1124.4186786944.

The spelling of 1421622061 in words is "one billion, four hundred twenty-one million, six hundred twenty-two thousand, sixty-one".