142118665 has 16 divisors (see below), whose sum is σ = 188628048. Its totient is φ = 102110976.

The previous prime is 142118621. The next prime is 142118681. The reversal of 142118665 is 566811241.

It can be written as a sum of positive squares in 8 ways, for example, as 9339136 + 132779529 = 3056^2 + 11523^2 .

It is a cyclic number.

It is not a de Polignac number, because 142118665 - 2¹³ = 142110473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142118665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27142 + ... + 31951.

It is an arithmetic number, because the mean of its divisors is an integer number (11789253).

Almost surely, 2^142118665 is an apocalyptic number.

It is an amenable number.

142118665 is a deficient number, since it is larger than the sum of its proper divisors (46509383).

142118665 is a wasteful number, since it uses less digits than its factorization.

142118665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59148.

The product of its digits is 11520, while the sum is 34.

The square root of 142118665 is about 11921.3533208273. The cubic root of 142118665 is about 521.8556298881.

The spelling of 142118665 in words is "one hundred forty-two million, one hundred eighteen thousand, six hundred sixty-five".