542145 has 16 divisors (see below), whose sum is σ = 887040. Its totient is φ = 282624.

The previous prime is 542141. The next prime is 542149. The reversal of 542145 is 541245.

It is an interprime number because it is at equal distance from previous prime (542141) and next prime (542149).

It is not a de Polignac number, because 542145 - 2² = 542141 is a prime.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542145.

It is not an unprimeable number, because it can be changed into a prime (542141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2⁵⁴²¹⁴⁵ is an apocalyptic number.

It is an amenable number.

542145 is a deficient number, since it is larger than the sum of its proper divisors (344895).

542145 is a wasteful number, since it uses less digits than its factorization.

542145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its digits is 800, while the sum is 21.

The square root of 542145 is about 736.3049639925. The cubic root of 542145 is about 81.5402087466.

Subtracting from 542145 its reverse (541245), we obtain a square (900 = 30²).

The spelling of 542145 in words is "five hundred forty-two thousand, one hundred forty-five".