1420983400681 has 8 divisors (see below), whose sum is σ = 1545441201864. Its totient is φ = 1298690083200.

The previous prime is 1420983400651. The next prime is 1420983400687. The reversal of 1420983400681 is 1860043890241.

It can be written as a sum of positive squares in 4 ways, for example, as 142464728025 + 1278518672656 = 377445^2 + 1130716^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1420983400681 - 2⁵ = 1420983400649 is a prime.

It is a super-2 number, since 2×1420983400681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420983400687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541119556 + ... + 541122181.

It is an arithmetic number, because the mean of its divisors is an integer number (193180150233).

Almost surely, 2^{1420983400681} is an apocalyptic number.

It is an amenable number.

1420983400681 is a deficient number, since it is larger than the sum of its proper divisors (124457801183).

1420983400681 is a wasteful number, since it uses less digits than its factorization.

1420983400681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082241851.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 1420983400681 in words is "one trillion, four hundred twenty billion, nine hundred eighty-three million, four hundred thousand, six hundred eighty-one".