142764865 has 4 divisors (see below), whose sum is σ = 171317844. Its totient is φ = 114211888.

The previous prime is 142764847. The next prime is 142764877. The reversal of 142764865 is 568467241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86694721 + 56070144 = 9311^2 + 7488^2 .

It is a cyclic number.

It is not a de Polignac number, because 142764865 - 2¹⁵ = 142732097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14276482 + ... + 14276491.

It is an arithmetic number, because the mean of its divisors is an integer number (42829461).

Almost surely, 2^142764865 is an apocalyptic number.

It is an amenable number.

142764865 is a deficient number, since it is larger than the sum of its proper divisors (28552979).

142764865 is an equidigital number, since it uses as much as digits as its factorization.

142764865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28552978.

The product of its digits is 322560, while the sum is 43.

The square root of 142764865 is about 11948.4252100434. The cubic root of 142764865 is about 522.6453767008.

The spelling of 142764865 in words is "one hundred forty-two million, seven hundred sixty-four thousand, eight hundred sixty-five".