142966891 has 2 divisors, whose sum is σ = 142966892. Its totient is φ = 142966890.

The previous prime is 142966883. The next prime is 142966937. The reversal of 142966891 is 198669241.

It is a happy number.

It is an a-pointer prime, because the next prime (142966937) can be obtained adding 142966891 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142966891 - 2³ = 142966883 is a prime.

It is not a weakly prime, because it can be changed into another prime (142966391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71483445 + 71483446.

It is an arithmetic number, because the mean of its divisors is an integer number (71483446).

Almost surely, 2^142966891 is an apocalyptic number.

142966891 is a deficient number, since it is larger than the sum of its proper divisors (1).

142966891 is an equidigital number, since it uses as much as digits as its factorization.

142966891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 142966891 is about 11956.8763061261. The cubic root of 142966891 is about 522.8917916440.

The spelling of 142966891 in words is "one hundred forty-two million, nine hundred sixty-six thousand, eight hundred ninety-one".