142666207 has 4 divisors (see below), whose sum is σ = 142693920. Its totient is φ = 142638496.

The previous prime is 142666201. The next prime is 142666213. The reversal of 142666207 is 702666241.

142666207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702666241 = 41 ⋅17138201.

It is an interprime number because it is at equal distance from previous prime (142666201) and next prime (142666213).

It is a cyclic number.

It is not a de Polignac number, because 142666207 - 2²³ = 134277599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142666201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3607 + ... + 17272.

It is an arithmetic number, because the mean of its divisors is an integer number (35673480).

Almost surely, 2^142666207 is an apocalyptic number.

142666207 is a deficient number, since it is larger than the sum of its proper divisors (27713).

142666207 is an equidigital number, since it uses as much as digits as its factorization.

142666207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27712.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 142666207 is about 11944.2960026952. The cubic root of 142666207 is about 522.5249571803.

Adding to 142666207 its sum of digits (34), we get a palindrome (142666241).

The spelling of 142666207 in words is "one hundred forty-two million, six hundred sixty-six thousand, two hundred seven".