1421036549 has 2 divisors, whose sum is σ = 1421036550. Its totient is φ = 1421036548.

The previous prime is 1421036537. The next prime is 1421036563. The reversal of 1421036549 is 9456301241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1201107649 + 219928900 = 34657^2 + 14830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421036549 - 2¹² = 1421032453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421036599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710518274 + 710518275.

It is an arithmetic number, because the mean of its divisors is an integer number (710518275).

Almost surely, 2^1421036549 is an apocalyptic number.

It is an amenable number.

1421036549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421036549 is an equidigital number, since it uses as much as digits as its factorization.

1421036549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1421036549 is about 37696.6384310325. The cubic root of 1421036549 is about 1124.2642890825.

The spelling of 1421036549 in words is "one billion, four hundred twenty-one million, thirty-six thousand, five hundred forty-nine".