142667247 has 16 divisors (see below), whose sum is σ = 203414112. Its totient is φ = 88627200.

The previous prime is 142667233. The next prime is 142667297. The reversal of 142667247 is 742766241.

It is not a de Polignac number, because 142667247 - 2²⁰ = 141618671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142667297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8698 + ... + 18999.

It is an arithmetic number, because the mean of its divisors is an integer number (12713382).

Almost surely, 2^142667247 is an apocalyptic number.

142667247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

142667247 is a deficient number, since it is larger than the sum of its proper divisors (60746865).

142667247 is a wasteful number, since it uses less digits than its factorization.

142667247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27818.

The product of its digits is 112896, while the sum is 39.

The square root of 142667247 is about 11944.3395380406. The cubic root of 142667247 is about 522.5262268682.

The spelling of 142667247 in words is "one hundred forty-two million, six hundred sixty-seven thousand, two hundred forty-seven".