542749247 has 2 divisors, whose sum is σ = 542749248. Its totient is φ = 542749246.

The previous prime is 542749223. The next prime is 542749313. The reversal of 542749247 is 742947245.

542749247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542749247 - 2¹⁰ = 542748223 is a prime.

It is equal to p_28484945 and since 542749247 and 28484945 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 542749198 and 542749207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542749447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271374623 + 271374624.

It is an arithmetic number, because the mean of its divisors is an integer number (271374624).

Almost surely, 2^542749247 is an apocalyptic number.

542749247 is a deficient number, since it is larger than the sum of its proper divisors (1).

542749247 is an equidigital number, since it uses as much as digits as its factorization.

542749247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 44.

The square root of 542749247 is about 23296.9793535557. The cubic root of 542749247 is about 815.7049101000.

The spelling of 542749247 in words is "five hundred forty-two million, seven hundred forty-nine thousand, two hundred forty-seven".