542449 has 4 divisors (see below), whose sum is σ = 544320. Its totient is φ = 540580.

The previous prime is 542447. The next prime is 542461. The reversal of 542449 is 944245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542449 - 2¹ = 542447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542441) 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, 397 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (136080).

2⁵⁴²⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

542449 is a deficient number, since it is larger than the sum of its proper divisors (1871).

542449 is a wasteful number, since it uses less digits than its factorization.

542449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870.

The product of its digits is 5760, while the sum is 28.

The square root of 542449 is about 736.5113712632. The cubic root of 542449 is about 81.5554467313. Note that the first 3 decimals are identical.

The spelling of 542449 in words is "five hundred forty-two thousand, four hundred forty-nine".