1421056633 has 4 divisors (see below), whose sum is σ = 1482841728. Its totient is φ = 1359271540.

The previous prime is 1421056613. The next prime is 1421056717. The reversal of 1421056633 is 3366501241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3366501241 = 7219 ⋅466339.

It is a cyclic number.

It is not a de Polignac number, because 1421056633 - 2⁹ = 1421056121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421056595 and 1421056604.

It is not an unprimeable number, because it can be changed into a prime (1421056603) 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 3 ways as a sum of consecutive naturals, for example, 30892513 + ... + 30892558.

It is an arithmetic number, because the mean of its divisors is an integer number (370710432).

Almost surely, 2^1421056633 is an apocalyptic number.

It is an amenable number.

1421056633 is a deficient number, since it is larger than the sum of its proper divisors (61785095).

1421056633 is an equidigital number, since it uses as much as digits as its factorization.

1421056633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61785094.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1421056633 is about 37696.9048198920. The cubic root of 1421056633 is about 1124.2695855960.

Adding to 1421056633 its reverse (3366501241), we get a palindrome (4787557874).

The spelling of 1421056633 in words is "one billion, four hundred twenty-one million, fifty-six thousand, six hundred thirty-three".