542851789 has 4 divisors (see below), whose sum is σ = 549392256. Its totient is φ = 536311324.

The previous prime is 542851781. The next prime is 542851801. The reversal of 542851789 is 987158245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542851789 - 2³ = 542851781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542851781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270109 + ... + 3270274.

It is an arithmetic number, because the mean of its divisors is an integer number (137348064).

Almost surely, 2^542851789 is an apocalyptic number.

It is an amenable number.

542851789 is a deficient number, since it is larger than the sum of its proper divisors (6540467).

542851789 is an equidigital number, since it uses as much as digits as its factorization.

542851789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6540466.

The product of its digits is 806400, while the sum is 49.

The square root of 542851789 is about 23299.1800070303. The cubic root of 542851789 is about 815.7562774342.

The spelling of 542851789 in words is "five hundred forty-two million, eight hundred fifty-one thousand, seven hundred eighty-nine".