845178142 has 16 divisors (see below), whose sum is σ = 1283323392. Its totient is φ = 417432960.

The previous prime is 845178097. The next prime is 845178143. The reversal of 845178142 is 241871548.

It is a junction number, because it is equal to n+sod(n) for n = 845178095 and 845178104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845178143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52042 + ... + 66322.

It is an arithmetic number, because the mean of its divisors is an integer number (80207712).

Almost surely, 2^845178142 is an apocalyptic number.

845178142 is a deficient number, since it is larger than the sum of its proper divisors (438145250).

845178142 is a wasteful number, since it uses less digits than its factorization.

845178142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14643.

The product of its digits is 71680, while the sum is 40.

The square root of 845178142 is about 29071.9476815710. The cubic root of 845178142 is about 945.4736265094.

The spelling of 845178142 in words is "eight hundred forty-five million, one hundred seventy-eight thousand, one hundred forty-two".