142209967 has 2 divisors, whose sum is σ = 142209968. Its totient is φ = 142209966.

The previous prime is 142209961. The next prime is 142210007. The reversal of 142209967 is 769902241.

It is an a-pointer prime, because the next prime (142210007) can be obtained adding 142209967 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (769902241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142209967 - 2²⁷ = 7992239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142209961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71104983 + 71104984.

It is an arithmetic number, because the mean of its divisors is an integer number (71104984).

Almost surely, 2^142209967 is an apocalyptic number.

142209967 is a deficient number, since it is larger than the sum of its proper divisors (1).

142209967 is an equidigital number, since it uses as much as digits as its factorization.

142209967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 142209967 is about 11925.1820531177. The cubic root of 142209967 is about 521.9673587336.

The spelling of 142209967 in words is "one hundred forty-two million, two hundred nine thousand, nine hundred sixty-seven".