542455 has 16 divisors (see below), whose sum is σ = 699840. Its totient is φ = 402688.

The previous prime is 542447. The next prime is 542461. The reversal of 542455 is 554245.

542455 = T₁₃₀ + T₁₃₁ + ... + T₁₇₅.

It is a cyclic number.

It is not a de Polignac number, because 542455 - 2³ = 542447 is a prime.

It is an Ulam number.

542455 is a lucky number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 6051 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (43740).

2⁵⁴²⁴⁵⁵ is an apocalyptic number.

542455 is a deficient number, since it is larger than the sum of its proper divisors (157385).

542455 is a wasteful number, since it uses less digits than its factorization.

542455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170.

The product of its digits is 4000, while the sum is 25.

The square root of 542455 is about 736.5154445088. The cubic root of 542455 is about 81.5557474237. Note that the first 3 decimals are identical.

The spelling of 542455 in words is "five hundred forty-two thousand, four hundred fifty-five".