1421404812 has 18 divisors (see below), whose sum is σ = 3592995588. Its totient is φ = 473801592.

The previous prime is 1421404793. The next prime is 1421404871. The reversal of 1421404812 is 2184041241.

1421404812 is a `hidden beast` number, since 1 + 42 + 140 + 481 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19741698 + ... + 19741769.

It is an arithmetic number, because the mean of its divisors is an integer number (199610866).

Almost surely, 2^1421404812 is an apocalyptic number.

1421404812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421404812 is an abundant number, since it is smaller than the sum of its proper divisors (2171590776).

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

1421404812 is a wasteful number, since it uses less digits than its factorization.

1421404812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39483477 (or 39483472 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1421404812 is about 37701.5226748204. The cubic root of 1421404812 is about 1124.3613987546.

The spelling of 1421404812 in words is "one billion, four hundred twenty-one million, four hundred four thousand, eight hundred twelve".