101781424 has 20 divisors (see below), whose sum is σ = 197643600. Its totient is φ = 50776640.

The previous prime is 101781403. The next prime is 101781443. The reversal of 101781424 is 424187101.

It is a junction number, because it is equal to n+sod(n) for n = 101781392 and 101781401.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 477 + ... + 14275.

It is an arithmetic number, because the mean of its divisors is an integer number (9882180).

Almost surely, 2^101781424 is an apocalyptic number.

It is an amenable number.

101781424 is a deficient number, since it is larger than the sum of its proper divisors (95862176).

101781424 is a wasteful number, since it uses less digits than its factorization.

101781424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268 (or 14262 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 101781424 is about 10088.6780105225. The cubic root of 101781424 is about 466.8988894108.

The spelling of 101781424 in words is "one hundred one million, seven hundred eighty-one thousand, four hundred twenty-four".