845142 has 16 divisors (see below), whose sum is σ = 1712640. Its totient is φ = 277992.

The previous prime is 845137. The next prime is 845167. The reversal of 845142 is 241548.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845142.

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 7 ways as a sum of consecutive naturals, for example, 418 + ... + 1365.

It is an arithmetic number, because the mean of its divisors is an integer number (107040).

2⁸⁴⁵¹⁴² is an apocalyptic number.

845142 is an abundant number, since it is smaller than the sum of its proper divisors (867498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845142 is a wasteful number, since it uses less digits than its factorization.

845142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its digits is 1280, while the sum is 24.

The square root of 845142 is about 919.3160501155. The cubic root of 845142 is about 94.5460149353.

It can be divided in two parts, 8 and 45142, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 845142 in words is "eight hundred forty-five thousand, one hundred forty-two".