542006789 has 2 divisors, whose sum is σ = 542006790. Its totient is φ = 542006788.

The previous prime is 542006743. The next prime is 542006791. The reversal of 542006789 is 987600245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332770564 + 209236225 = 18242^2 + 14465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542006789 is a prime.

Together with 542006791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542006719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271003394 + 271003395.

It is an arithmetic number, because the mean of its divisors is an integer number (271003395).

Almost surely, 2^542006789 is an apocalyptic number.

It is an amenable number.

542006789 is a deficient number, since it is larger than the sum of its proper divisors (1).

542006789 is an equidigital number, since it uses as much as digits as its factorization.

542006789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 542006789 is about 23281.0392594489. The cubic root of 542006789 is about 815.3327904353.

The spelling of 542006789 in words is "five hundred forty-two million, six thousand, seven hundred eighty-nine".