1421730204569 has 2 divisors, whose sum is σ = 1421730204570. Its totient is φ = 1421730204568.

The previous prime is 1421730204563. The next prime is 1421730204689. The reversal of 1421730204569 is 9654020371241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1390484339344 + 31245865225 = 1179188^2 + 176765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421730204569 is a prime.

It is a super-2 number, since 2×1421730204569² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421730204563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710865102284 + 710865102285.

It is an arithmetic number, because the mean of its divisors is an integer number (710865102285).

Almost surely, 2^{1421730204569} is an apocalyptic number.

It is an amenable number.

1421730204569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421730204569 is an equidigital number, since it uses as much as digits as its factorization.

1421730204569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 1421730204569 in words is "one trillion, four hundred twenty-one billion, seven hundred thirty million, two hundred four thousand, five hundred sixty-nine".