1421043469 has 2 divisors, whose sum is σ = 1421043470. Its totient is φ = 1421043468.

The previous prime is 1421043443. The next prime is 1421043493. The reversal of 1421043469 is 9643401241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1312612900 + 108430569 = 36230^2 + 10413^2 .

It is an emirp because it is prime and its reverse (9643401241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421043469 - 2²¹ = 1418946317 is a prime.

It is a super-2 number, since 2×1421043469² = 4038729081575107922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421043499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710521734 + 710521735.

It is an arithmetic number, because the mean of its divisors is an integer number (710521735).

Almost surely, 2^1421043469 is an apocalyptic number.

It is an amenable number.

1421043469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421043469 is an equidigital number, since it uses as much as digits as its factorization.

1421043469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1421043469 is about 37696.7302162933. The cubic root of 1421043469 is about 1124.2661140171.

The spelling of 1421043469 in words is "one billion, four hundred twenty-one million, forty-three thousand, four hundred sixty-nine".