1421717680 has 40 divisors (see below), whose sum is σ = 3307069584. Its totient is φ = 568416000.

The previous prime is 1421717669. The next prime is 1421717723. The reversal of 1421717680 is 867171241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303355 + ... + 308005.

Almost surely, 2^1421717680 is an apocalyptic number.

1421717680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421717680 is an abundant number, since it is smaller than the sum of its proper divisors (1885351904).

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

1421717680 is a wasteful number, since it uses less digits than its factorization.

1421717680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8485 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1421717680 is about 37705.6717219041. The cubic root of 1421717680 is about 1124.4438877806.

The spelling of 1421717680 in words is "one billion, four hundred twenty-one million, seven hundred seventeen thousand, six hundred eighty".