542998 has 4 divisors (see below), whose sum is σ = 814500. Its totient is φ = 271498.

The previous prime is 542987. The next prime is 542999. The reversal of 542998 is 899245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899245 = 5 ⋅179849.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542999) 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 as a sum of consecutive naturals, namely, 135748 + ... + 135751.

It is an arithmetic number, because the mean of its divisors is an integer number (203625).

2⁵⁴²⁹⁹⁸ is an apocalyptic number.

542998 is a deficient number, since it is larger than the sum of its proper divisors (271502).

542998 is a wasteful number, since it uses less digits than its factorization.

542998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271501.

The product of its digits is 25920, while the sum is 37.

The square root of 542998 is about 736.8839800131. The cubic root of 542998 is about 81.5829509107.

It can be divided in two parts, 542 and 998, that added together give a triangular number (1540 = T₅₅).

The spelling of 542998 in words is "five hundred forty-two thousand, nine hundred ninety-eight".