542834865 has 20 divisors (see below), whose sum is σ = 973082484. Its totient is φ = 289511712.

The previous prime is 542834849. The next prime is 542834899. The reversal of 542834865 is 568438245.

542834865 is a `hidden beast` number, since 542 + 8 + 3 + 48 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 333135504 + 209699361 = 18252^2 + 14481^2 .

It is not a de Polignac number, because 542834865 - 2⁴ = 542834849 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 542834865.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 669762 + ... + 670571.

Almost surely, 2^542834865 is an apocalyptic number.

It is an amenable number.

542834865 is a deficient number, since it is larger than the sum of its proper divisors (430247619).

542834865 is a wasteful number, since it uses less digits than its factorization.

542834865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340350 (or 1340341 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 542834865 is about 23298.8168154522. The cubic root of 542834865 is about 815.7477999805.

The spelling of 542834865 in words is "five hundred forty-two million, eight hundred thirty-four thousand, eight hundred sixty-five".