1421722800 has 120 divisors (see below), whose sum is σ = 5060318480. Its totient is φ = 379123200.

The previous prime is 1421722777. The next prime is 1421722811. The reversal of 1421722800 is 82271241.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55021 + ... + 76620.

Almost surely, 2^1421722800 is an apocalyptic number.

1421722800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421722800 is an abundant number, since it is smaller than the sum of its proper divisors (3638595680).

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

1421722800 is a wasteful number, since it uses less digits than its factorization.

1421722800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131668 (or 131651 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 1421722800 is about 37705.7396161380. The cubic root of 1421722800 is about 1124.4452375905.

The spelling of 1421722800 in words is "one billion, four hundred twenty-one million, seven hundred twenty-two thousand, eight hundred".