542165817 has 32 divisors (see below), whose sum is σ = 798134400. Its totient is φ = 326011392.

The previous prime is 542165803. The next prime is 542165843. The reversal of 542165817 is 718561245.

It is not a de Polignac number, because 542165817 - 2¹⁰ = 542164793 is a prime.

It is a super-3 number, since 3×542165817³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (542165857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118423 + ... + 122915.

It is an arithmetic number, because the mean of its divisors is an integer number (24941700).

Almost surely, 2^542165817 is an apocalyptic number.

542165817 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

542165817 is a deficient number, since it is larger than the sum of its proper divisors (255968583).

542165817 is a wasteful number, since it uses less digits than its factorization.

542165817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617.

The product of its digits is 67200, while the sum is 39.

The square root of 542165817 is about 23284.4544063201. The cubic root of 542165817 is about 815.4125237933.

The spelling of 542165817 in words is "five hundred forty-two million, one hundred sixty-five thousand, eight hundred seventeen".