142442667 has 12 divisors (see below), whose sum is σ = 205862904. Its totient is φ = 94909920.

The previous prime is 142442647. The next prime is 142442681. The reversal of 142442667 is 766244241.

It is not a de Polignac number, because 142442667 - 2¹⁰ = 142441643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142442627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20692 + ... + 26702.

It is an arithmetic number, because the mean of its divisors is an integer number (17155242).

Almost surely, 2^142442667 is an apocalyptic number.

142442667 is a deficient number, since it is larger than the sum of its proper divisors (63420237).

142442667 is a wasteful number, since it uses less digits than its factorization.

142442667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8650 (or 8647 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 142442667 is about 11934.9347296079. The cubic root of 142442667 is about 522.2519042247.

The spelling of 142442667 in words is "one hundred forty-two million, four hundred forty-two thousand, six hundred sixty-seven".