542485 has 4 divisors (see below), whose sum is σ = 650988. Its totient is φ = 433984.

The previous prime is 542483. The next prime is 542489. The reversal of 542485 is 584245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584245 = 5 ⋅116849.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 130321 = 642^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 542485 - 2¹ = 542483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54244 + ... + 54253.

It is an arithmetic number, because the mean of its divisors is an integer number (162747).

2⁵⁴²⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

542485 is a deficient number, since it is larger than the sum of its proper divisors (108503).

542485 is a wasteful number, since it uses less digits than its factorization.

542485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108502.

The product of its digits is 6400, while the sum is 28.

The square root of 542485 is about 736.5358103989. The cubic root of 542485 is about 81.5572508525.

The spelling of 542485 in words is "five hundred forty-two thousand, four hundred eighty-five".