142868565 has 36 divisors (see below), whose sum is σ = 288074124. Its totient is φ = 65310336.

The previous prime is 142868563. The next prime is 142868597. The reversal of 142868565 is 565868241.

142868565 is a `hidden beast` number, since 1 + 4 + 2 + 86 + 8 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 100761444 + 42107121 = 10038^2 + 6489^2 .

It is not a de Polignac number, because 142868565 - 2¹ = 142868563 is a prime.

It is a super-2 number, since 2×142868565² = 40822853730318450, which contains 22 as substring.

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 142868565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142868563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30192 + ... + 34601.

It is an arithmetic number, because the mean of its divisors is an integer number (8002059).

Almost surely, 2^142868565 is an apocalyptic number.

142868565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142868565 is an abundant number, since it is smaller than the sum of its proper divisors (145205559).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142868565 is a wasteful number, since it uses less digits than its factorization.

142868565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64818 (or 64808 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 142868565 is about 11952.7639063105. The cubic root of 142868565 is about 522.7718905743.

The spelling of 142868565 in words is "one hundred forty-two million, eight hundred sixty-eight thousand, five hundred sixty-five".