1420381897920 has 112 divisors (see below), whose sum is σ = 5010791725920. Its totient is φ = 378768503808.

The previous prime is 1420381897919. The next prime is 1420381897927. The reversal of 1420381897920 is 297981830241.

1420381897920 is a `hidden beast` number, since 1 + 420 + 38 + 18 + 97 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1420381897927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82189387 + ... + 82206666.

Almost surely, 2^{1420381897920} is an apocalyptic number.

1420381897920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420381897920 is an abundant number, since it is smaller than the sum of its proper divisors (3590409828000).

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

1420381897920 is a wasteful number, since it uses less digits than its factorization.

1420381897920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164396079 (or 164396063 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 1420381897920 in words is "one trillion, four hundred twenty billion, three hundred eighty-one million, eight hundred ninety-seven thousand, nine hundred twenty".