542990 has 16 divisors (see below), whose sum is σ = 1117152. Its totient is φ = 186144.

The previous prime is 542987. The next prime is 542999. The reversal of 542990 is 99245.

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 in 7 ways as a sum of consecutive naturals, for example, 3809 + ... + 3948.

It is an arithmetic number, because the mean of its divisors is an integer number (69822).

2⁵⁴²⁹⁹⁰ is an apocalyptic number.

542990 is an abundant number, since it is smaller than the sum of its proper divisors (574162).

It is a weird number, because it is abundant, but not a pseudoperfect number.

542990 is a wasteful number, since it uses less digits than its factorization.

542990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 542990 is about 736.8785517302. The cubic root of 542990 is about 81.5825502544.

The spelling of 542990 in words is "five hundred forty-two thousand, nine hundred ninety".