1421503249 has 2 divisors, whose sum is σ = 1421503250. Its totient is φ = 1421503248.

The previous prime is 1421503243. The next prime is 1421503381. The reversal of 1421503249 is 9423051241.

1421503249 is nontrivially palindromic in base 8.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1408651024 + 12852225 = 37532^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421503249 - 2¹⁷ = 1421372177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421503249.

It is not a weakly prime, because it can be changed into another prime (1421503243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710751624 + 710751625.

It is an arithmetic number, because the mean of its divisors is an integer number (710751625).

Almost surely, 2^1421503249 is an apocalyptic number.

It is an amenable number.

1421503249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421503249 is an equidigital number, since it uses as much as digits as its factorization.

1421503249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1421503249 is about 37702.8281299958. The cubic root of 1421503249 is about 1124.3873534081.

The spelling of 1421503249 in words is "one billion, four hundred twenty-one million, five hundred three thousand, two hundred forty-nine".