542191213439 has 4 divisors (see below), whose sum is σ = 542490603000. Its totient is φ = 541891823880.

The previous prime is 542191213363. The next prime is 542191213451. The reversal of 542191213439 is 934312191245.

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 542191213439 - 2¹⁶ = 542191147903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542191213439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542191213139) 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, 149692064 + ... + 149695685.

It is an arithmetic number, because the mean of its divisors is an integer number (135622650750).

Almost surely, 2^542191213439 is an apocalyptic number.

542191213439 is a deficient number, since it is larger than the sum of its proper divisors (299389561).

542191213439 is a wasteful number, since it uses less digits than its factorization.

542191213439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299389560.

The product of its digits is 233280, while the sum is 44.

The spelling of 542191213439 in words is "five hundred forty-two billion, one hundred ninety-one million, two hundred thirteen thousand, four hundred thirty-nine".