1421923636 has 12 divisors (see below), whose sum is σ = 2843847328. Its totient is φ = 609395832.

The previous prime is 1421923627. The next prime is 1421923637. The reversal of 1421923636 is 6363291241.

1421923636 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1421923595 and 1421923604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421923637) 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 in 3 ways as a sum of consecutive naturals, for example, 25391466 + ... + 25391521.

Almost surely, 2^1421923636 is an apocalyptic number.

It is an amenable number.

1421923636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421923636 is a wasteful number, since it uses less digits than its factorization.

1421923636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50782998 (or 50782996 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 1421923636 is about 37708.4027240614. The cubic root of 1421923636 is about 1124.4981823818.

The spelling of 1421923636 in words is "one billion, four hundred twenty-one million, nine hundred twenty-three thousand, six hundred thirty-six".