1421164800 has 324 divisors, whose sum is σ = 5545363824. Its totient is φ = 344371200.

The previous prime is 1421164799. The next prime is 1421164817. The reversal of 1421164800 is 84611241.

It is a happy number.

1421164800 is a `hidden beast` number, since 1 + 4 + 2 + 11 + 648 + 0 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 632479 + ... + 634721.

Almost surely, 2^1421164800 is an apocalyptic number.

1421164800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421164800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2772681912).

1421164800 is an abundant number, since it is smaller than the sum of its proper divisors (4124199024).

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

1421164800 is a wasteful number, since it uses less digits than its factorization.

1421164800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286 (or 2264 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1421164800 is about 37698.3394859774. The cubic root of 1421164800 is about 1124.2981103289.

The spelling of 1421164800 in words is "one billion, four hundred twenty-one million, one hundred sixty-four thousand, eight hundred".