542047331 has 4 divisors (see below), whose sum is σ = 619482672. Its totient is φ = 464611992.

The previous prime is 542047277. The next prime is 542047343. The reversal of 542047331 is 133740245.

It is a happy number.

542047331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 542047331 - 2¹⁸ = 541785187 is a prime.

It is a super-2 number, since 2×542047331² = 587630618088447122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542047294 and 542047303.

It is not an unprimeable number, because it can be changed into a prime (542047391) 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, 38717660 + ... + 38717673.

It is an arithmetic number, because the mean of its divisors is an integer number (154870668).

Almost surely, 2^542047331 is an apocalyptic number.

542047331 is a deficient number, since it is larger than the sum of its proper divisors (77435341).

542047331 is an equidigital number, since it uses as much as digits as its factorization.

542047331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77435340.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 542047331 is about 23281.9099517200. The cubic root of 542047331 is about 815.3531188386.

Adding to 542047331 its reverse (133740245), we get a palindrome (675787576).

The spelling of 542047331 in words is "five hundred forty-two million, forty-seven thousand, three hundred thirty-one".