1681420424 has 32 divisors (see below), whose sum is σ = 3170962080. Its totient is φ = 835847424.

The previous prime is 1681420423. The next prime is 1681420457. The reversal of 1681420424 is 4240241861.

It is not an unprimeable number, because it can be changed into a prime (1681420421) 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 7 ways as a sum of consecutive naturals, for example, 1295744 + ... + 1297040.

It is an arithmetic number, because the mean of its divisors is an integer number (99092565).

Almost surely, 2^1681420424 is an apocalyptic number.

It is an amenable number.

1681420424 is a deficient number, since it is larger than the sum of its proper divisors (1489541656).

1681420424 is a wasteful number, since it uses less digits than its factorization.

1681420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1681420424 is about 41005.1268014135. The cubic root of 1681420424 is about 1189.1193314674.

The spelling of 1681420424 in words is "one billion, six hundred eighty-one million, four hundred twenty thousand, four hundred twenty-four".