1421703688 has 16 divisors (see below), whose sum is σ = 2737740780. Its totient is φ = 691639488.

The previous prime is 1421703653. The next prime is 1421703691. The reversal of 1421703688 is 8863071241.

It can be written as a sum of positive squares in 2 ways, for example, as 1412106084 + 9597604 = 37578^2 + 3098^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1421703688.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2401231 + ... + 2401822.

Almost surely, 2^1421703688 is an apocalyptic number.

It is an amenable number.

1421703688 is a deficient number, since it is larger than the sum of its proper divisors (1316037092).

1421703688 is a wasteful number, since it uses less digits than its factorization.

1421703688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803096 (or 4803092 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1421703688 is about 37705.4861790695. The cubic root of 1421703688 is about 1124.4401989867.

The spelling of 1421703688 in words is "one billion, four hundred twenty-one million, seven hundred three thousand, six hundred eighty-eight".