542345 has 8 divisors (see below), whose sum is σ = 672000. Its totient is φ = 419760.

The previous prime is 542323. The next prime is 542371. The reversal of 542345 is 543245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542345 - 2⁶ = 542281 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 542345.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 1904.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2⁵⁴²³⁴⁵ is an apocalyptic number.

It is an amenable number.

542345 is a deficient number, since it is larger than the sum of its proper divisors (129655).

542345 is a wasteful number, since it uses less digits than its factorization.

542345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535.

The product of its digits is 2400, while the sum is 23.

The square root of 542345 is about 736.4407647598. The cubic root of 542345 is about 81.5502343774.

Subtracting 542345 from its reverse (543245), we obtain a square (900 = 30²).

The spelling of 542345 in words is "five hundred forty-two thousand, three hundred forty-five".