142665107 has 4 divisors (see below), whose sum is σ = 153639360. Its totient is φ = 131690856.

The previous prime is 142665101. The next prime is 142665109. The reversal of 142665107 is 701566241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701566241 = 19 ⋅36924539.

It is a cyclic number.

It is not a de Polignac number, because 142665107 - 2²⁴ = 125887891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142665101) 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 3 ways as a sum of consecutive naturals, for example, 5487107 + ... + 5487132.

It is an arithmetic number, because the mean of its divisors is an integer number (38409840).

Almost surely, 2^142665107 is an apocalyptic number.

142665107 is a deficient number, since it is larger than the sum of its proper divisors (10974253).

142665107 is a wasteful number, since it uses less digits than its factorization.

142665107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10974252.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 142665107 is about 11944.2499555225. The cubic root of 142665107 is about 522.5236142346.

The spelling of 142665107 in words is "one hundred forty-two million, six hundred sixty-five thousand, one hundred seven".