142722865 has 8 divisors (see below), whose sum is σ = 171887400. Its totient is φ = 113764992.

The previous prime is 142722863. The next prime is 142722869. The reversal of 142722865 is 568227241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 142635249 = 296^2 + 11943^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142722865 - 2¹ = 142722863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142722863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50140 + ... + 52909.

It is an arithmetic number, because the mean of its divisors is an integer number (21485925).

Almost surely, 2^142722865 is an apocalyptic number.

It is an amenable number.

142722865 is a deficient number, since it is larger than the sum of its proper divisors (29164535).

142722865 is a wasteful number, since it uses less digits than its factorization.

142722865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103331.

The product of its digits is 53760, while the sum is 37.

The square root of 142722865 is about 11946.6675269717. The cubic root of 142722865 is about 522.5941193209.

The spelling of 142722865 in words is "one hundred forty-two million, seven hundred twenty-two thousand, eight hundred sixty-five".