101878 has 16 divisors (see below), whose sum is σ = 184320. Its totient is φ = 41256.

The previous prime is 101873. The next prime is 101879. The reversal of 101878 is 878101.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101873) by changing a digit.

101878 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 75 + ... + 457.

It is an arithmetic number, because the mean of its divisors is an integer number (11520).

2¹⁰¹⁸⁷⁸ is an apocalyptic number.

101878 is a deficient number, since it is larger than the sum of its proper divisors (82442).

101878 is a wasteful number, since it uses less digits than its factorization.

101878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 101878 is about 319.1833328982. The cubic root of 101878 is about 46.7046516129.

Adding to 101878 its reverse (878101), we get a palindrome (979979).

It can be divided in two parts, 101 and 878, that added together give a palindrome (979).

The spelling of 101878 in words is "one hundred one thousand, eight hundred seventy-eight".