542541185 has 4 divisors (see below), whose sum is σ = 651049428. Its totient is φ = 434032944.

The previous prime is 542541161. The next prime is 542541217. The reversal of 542541185 is 581145245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 581145245 = 5 ⋅116229049.

It can be written as a sum of positive squares in 2 ways, for example, as 233203441 + 309337744 = 15271^2 + 17588^2 .

It is a cyclic number.

It is not a de Polignac number, because 542541185 - 2⁶ = 542541121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54254114 + ... + 54254123.

It is an arithmetic number, because the mean of its divisors is an integer number (162762357).

Almost surely, 2^542541185 is an apocalyptic number.

It is an amenable number.

542541185 is a deficient number, since it is larger than the sum of its proper divisors (108508243).

542541185 is a wasteful number, since it uses less digits than its factorization.

542541185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108508242.

The product of its digits is 32000, while the sum is 35.

The square root of 542541185 is about 23292.5134968298. The cubic root of 542541185 is about 815.6006637484.

The spelling of 542541185 in words is "five hundred forty-two million, five hundred forty-one thousand, one hundred eighty-five".