542116061 has 4 divisors (see below), whose sum is σ = 543725052. Its totient is φ = 540507072.

The previous prime is 542115991. The next prime is 542116073. The reversal of 542116061 is 160611245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160611245 = 5 ⋅32122249.

It can be written as a sum of positive squares in 2 ways, for example, as 390062500 + 152053561 = 19750^2 + 12331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542116061 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 542116061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542116361) 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, 803990 + ... + 804663.

It is an arithmetic number, because the mean of its divisors is an integer number (135931263).

Almost surely, 2^542116061 is an apocalyptic number.

It is an amenable number.

542116061 is a deficient number, since it is larger than the sum of its proper divisors (1608991).

542116061 is a wasteful number, since it uses less digits than its factorization.

542116061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608990.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 542116061 is about 23283.3859436294. The cubic root of 542116061 is about 815.3875788377.

The spelling of 542116061 in words is "five hundred forty-two million, one hundred sixteen thousand, sixty-one".