542897 has 4 divisors (see below), whose sum is σ = 554496. Its totient is φ = 531300.

The previous prime is 542891. The next prime is 542911. The reversal of 542897 is 798245.

It is a happy number.

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 542897 - 2¹² = 538801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542891) 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 3 ways as a sum of consecutive naturals, for example, 5729 + ... + 5822.

It is an arithmetic number, because the mean of its divisors is an integer number (138624).

2⁵⁴²⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

542897 is a deficient number, since it is larger than the sum of its proper divisors (11599).

542897 is a wasteful number, since it uses less digits than its factorization.

542897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11598.

The product of its digits is 20160, while the sum is 35.

The square root of 542897 is about 736.8154450064. The cubic root of 542897 is about 81.5778923353.

The spelling of 542897 in words is "five hundred forty-two thousand, eight hundred ninety-seven".