1424840621 has 2 divisors, whose sum is σ = 1424840622. Its totient is φ = 1424840620.

The previous prime is 1424840611. The next prime is 1424840653. The reversal of 1424840621 is 1260484241.

It is an a-pointer prime, because the next prime (1424840653) can be obtained adding 1424840621 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1383096100 + 41744521 = 37190^2 + 6461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424840621 - 2¹⁰ = 1424839597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1424840611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712420310 + 712420311.

It is an arithmetic number, because the mean of its divisors is an integer number (712420311).

Almost surely, 2^1424840621 is an apocalyptic number.

It is an amenable number.

1424840621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424840621 is an equidigital number, since it uses as much as digits as its factorization.

1424840621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1424840621 is about 37747.0610908982. The cubic root of 1424840621 is about 1125.2666024288.

The spelling of 1424840621 in words is "one billion, four hundred twenty-four million, eight hundred forty thousand, six hundred twenty-one".