1421427202020 has 288 divisors, whose sum is σ = 4991243362560. Its totient is φ = 320709058560.

The previous prime is 1421427202007. The next prime is 1421427202021. The reversal of 1421427202020 is 202027241241.

It is a happy number.

1421427202020 is a `hidden beast` number, since 14 + 2 + 1 + 427 + 20 + 202 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (1421427202021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 138145036 + ... + 138155324.

It is an arithmetic number, because the mean of its divisors is an integer number (17330706120).

Almost surely, 2^{1421427202020} is an apocalyptic number.

1421427202020 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 1421427202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2495621681280).

1421427202020 is an abundant number, since it is smaller than the sum of its proper divisors (3569816160540).

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

1421427202020 is a wasteful number, since it uses less digits than its factorization.

1421427202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11715 (or 11710 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The spelling of 1421427202020 in words is "one trillion, four hundred twenty-one billion, four hundred twenty-seven million, two hundred two thousand, twenty".