1680101421 has 16 divisors (see below), whose sum is σ = 2248803648. Its totient is φ = 1115744000.

The previous prime is 1680101417. The next prime is 1680101441. The reversal of 1680101421 is 1241010861.

It is a cyclic number.

It is not a de Polignac number, because 1680101421 - 2² = 1680101417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1680101391 and 1680101400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680101441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233781 + ... + 1235141.

It is an arithmetic number, because the mean of its divisors is an integer number (140550228).

Almost surely, 2^1680101421 is an apocalyptic number.

It is an amenable number.

1680101421 is a deficient number, since it is larger than the sum of its proper divisors (568702227).

1680101421 is a wasteful number, since it uses less digits than its factorization.

1680101421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1680101421 is about 40989.0402546827. The cubic root of 1680101421 is about 1188.8083122343.

The spelling of 1680101421 in words is "one billion, six hundred eighty million, one hundred one thousand, four hundred twenty-one".