542258865 has 24 divisors (see below), whose sum is σ = 965321448. Its totient is φ = 281387520.

The previous prime is 542258831. The next prime is 542258867. The reversal of 542258865 is 568852245.

It is a happy number.

542258865 is a `hidden beast` number, since 5 + 4 + 2 + 2 + 588 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 90611361 + 451647504 = 9519^2 + 21252^2 .

It is not a de Polignac number, because 542258865 - 2¹⁷ = 542127793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 542258865.

It is not an unprimeable number, because it can be changed into a prime (542258867) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161176 + ... + 164505.

It is an arithmetic number, because the mean of its divisors is an integer number (40221727).

Almost surely, 2^542258865 is an apocalyptic number.

It is an amenable number.

542258865 is a deficient number, since it is larger than the sum of its proper divisors (423062583).

542258865 is a wasteful number, since it uses less digits than its factorization.

542258865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325729 (or 325726 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 542258865 is about 23286.4523918952. The cubic root of 542258865 is about 815.4591689106.

The spelling of 542258865 in words is "five hundred forty-two million, two hundred fifty-eight thousand, eight hundred sixty-five".