1424205021 has 16 divisors (see below), whose sum is σ = 2045373440. Its totient is φ = 878577840.

The previous prime is 1424205019. The next prime is 1424205023. The reversal of 1424205021 is 1205024241.

It is an interprime number because it is at equal distance from previous prime (1424205019) and next prime (1424205023).

It is not a de Polignac number, because 1424205021 - 2¹ = 1424205019 is a prime.

It is a super-2 number, since 2×1424205021² = 4056719883683220882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424205023) 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 15 ways as a sum of consecutive naturals, for example, 288085 + ... + 292986.

It is an arithmetic number, because the mean of its divisors is an integer number (127835840).

Almost surely, 2^1424205021 is an apocalyptic number.

It is an amenable number.

1424205021 is a deficient number, since it is larger than the sum of its proper divisors (621168419).

1424205021 is a wasteful number, since it uses less digits than its factorization.

1424205021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581136.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1424205021 is about 37738.6409532723. The cubic root of 1424205021 is about 1125.0992560327.

Adding to 1424205021 its reverse (1205024241), we get a palindrome (2629229262).

The spelling of 1424205021 in words is "one billion, four hundred twenty-four million, two hundred five thousand, twenty-one".