1421340869 has 6 divisors (see below), whose sum is σ = 1539085266. Its totient is φ = 1312006800.

The previous prime is 1421340863. The next prime is 1421340871. The reversal of 1421340869 is 9680431241.

It can be written as a sum of positive squares in 3 ways, for example, as 194239969 + 1227100900 = 13937^2 + 35030^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1421340869 is a prime.

It is a super-2 number, since 2×1421340869² = 4040419731779350322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421340863) 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 in 5 ways as a sum of consecutive naturals, for example, 4204982 + ... + 4205319.

It is an arithmetic number, because the mean of its divisors is an integer number (256514211).

Almost surely, 2^1421340869 is an apocalyptic number.

It is an amenable number.

1421340869 is a deficient number, since it is larger than the sum of its proper divisors (117744397).

1421340869 is an equidigital number, since it uses as much as digits as its factorization.

1421340869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410327 (or 8410314 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1421340869 is about 37700.6746491359. The cubic root of 1421340869 is about 1124.3445384114.

The spelling of 1421340869 in words is "one billion, four hundred twenty-one million, three hundred forty thousand, eight hundred sixty-nine".