142645668 has 24 divisors (see below), whose sum is σ = 363098400. Its totient is φ = 43225920.

The previous prime is 142645667. The next prime is 142645687. The reversal of 142645668 is 866546241.

It is not an unprimeable number, because it can be changed into a prime (142645667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540193 + ... + 540456.

It is an arithmetic number, because the mean of its divisors is an integer number (15129100).

Almost surely, 2^142645668 is an apocalyptic number.

It is an amenable number.

142645668 is an abundant number, since it is smaller than the sum of its proper divisors (220452732).

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

142645668 is a wasteful number, since it uses less digits than its factorization.

142645668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080667 (or 1080665 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 142645668 is about 11943.4361889701. The cubic root of 142645668 is about 522.4998808025.

The spelling of 142645668 in words is "one hundred forty-two million, six hundred forty-five thousand, six hundred sixty-eight".