542239687752 has 128 divisors (see below), whose sum is σ = 1591472102400. Its totient is φ = 150705854208.

The previous prime is 542239687747. The next prime is 542239687753. The reversal of 542239687752 is 257786932245.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (542239687753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50487199 + ... + 50497937.

It is an arithmetic number, because the mean of its divisors is an integer number (12433375800).

Almost surely, 2^542239687752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542239687752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795736051200).

542239687752 is an abundant number, since it is smaller than the sum of its proper divisors (1049232414648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542239687752 is a wasteful number, since it uses less digits than its factorization.

542239687752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18915 (or 18911 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 60.

The spelling of 542239687752 in words is "five hundred forty-two billion, two hundred thirty-nine million, six hundred eighty-seven thousand, seven hundred fifty-two".