542215105542 has 128 divisors (see below), whose sum is σ = 1337329405440. Its totient is φ = 161454384000.

The previous prime is 542215105501. The next prime is 542215105543. The reversal of 542215105542 is 245501512245.

542215105542 is a `hidden beast` number, since 5 + 4 + 2 + 2 + 1 + 5 + 105 + 542 = 666.

It is a super-2 number, since 2×542215105542² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542215105497 and 542215105506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542215105543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39596917 + ... + 39610607.

It is an arithmetic number, because the mean of its divisors is an integer number (10447885980).

Almost surely, 2^542215105542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542215105542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668664702720).

542215105542 is an abundant number, since it is smaller than the sum of its proper divisors (795114299898).

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

542215105542 is a wasteful number, since it uses less digits than its factorization.

542215105542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14867 (or 14861 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 542215105542 its reverse (245501512245), we get a palindrome (787716617787).

The spelling of 542215105542 in words is "five hundred forty-two billion, two hundred fifteen million, one hundred five thousand, five hundred forty-two".