542984249 has 4 divisors (see below), whose sum is σ = 543052836. Its totient is φ = 542915664.

The previous prime is 542984237. The next prime is 542984291. The reversal of 542984249 is 942489245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 439657024 + 103327225 = 20968^2 + 10165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542984249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542984219) 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, 20594 + ... + 38859.

It is an arithmetic number, because the mean of its divisors is an integer number (135763209).

Almost surely, 2^542984249 is an apocalyptic number.

It is an amenable number.

542984249 is a deficient number, since it is larger than the sum of its proper divisors (68587).

542984249 is an equidigital number, since it uses as much as digits as its factorization.

542984249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68586.

The product of its digits is 829440, while the sum is 47.

The square root of 542984249 is about 23302.0224229572. The cubic root of 542984249 is about 815.8226223010.

The spelling of 542984249 in words is "five hundred forty-two million, nine hundred eighty-four thousand, two hundred forty-nine".