542185557 has 4 divisors (see below), whose sum is σ = 722914080. Its totient is φ = 361457036.

The previous prime is 542185529. The next prime is 542185559. The reversal of 542185557 is 755581245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542185557 - 2⁶ = 542185493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542185559) 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, 90364257 + ... + 90364262.

It is an arithmetic number, because the mean of its divisors is an integer number (180728520).

Almost surely, 2^542185557 is an apocalyptic number.

It is an amenable number.

542185557 is a deficient number, since it is larger than the sum of its proper divisors (180728523).

542185557 is a wasteful number, since it uses less digits than its factorization.

542185557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180728522.

The product of its digits is 280000, while the sum is 42.

The square root of 542185557 is about 23284.8782904270. The cubic root of 542185557 is about 815.4224199341.

The spelling of 542185557 in words is "five hundred forty-two million, one hundred eighty-five thousand, five hundred fifty-seven".