542384647 has 4 divisors (see below), whose sum is σ = 619868176. Its totient is φ = 464901120.

The previous prime is 542384639. The next prime is 542384663. The reversal of 542384647 is 746483245.

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 542384647 - 2³ = 542384639 is a prime.

It is a super-2 number, since 2×542384647² = 588362210602629218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542384617) 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, 38741754 + ... + 38741767.

It is an arithmetic number, because the mean of its divisors is an integer number (154967044).

Almost surely, 2^542384647 is an apocalyptic number.

542384647 is a deficient number, since it is larger than the sum of its proper divisors (77483529).

542384647 is an equidigital number, since it uses as much as digits as its factorization.

542384647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77483528.

The product of its digits is 645120, while the sum is 43.

The square root of 542384647 is about 23289.1529901798. The cubic root of 542384647 is about 815.5222151555.

It can be divided in two parts, 54238 and 4647, that added together give a palindrome (58885).

The spelling of 542384647 in words is "five hundred forty-two million, three hundred eighty-four thousand, six hundred forty-seven".