142911869 has 8 divisors (see below), whose sum is σ = 146161920. Its totient is φ = 139698000.

The previous prime is 142911841. The next prime is 142911883. The reversal of 142911869 is 968119241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142911869 - 2¹² = 142907773 is a prime.

It is a super-2 number, since 2×142911869² = 40847604602146322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142911889) 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 7 ways as a sum of consecutive naturals, for example, 977 + ... + 16934.

It is an arithmetic number, because the mean of its divisors is an integer number (18270240).

Almost surely, 2^142911869 is an apocalyptic number.

It is an amenable number.

142911869 is a deficient number, since it is larger than the sum of its proper divisors (3250051).

142911869 is a wasteful number, since it uses less digits than its factorization.

142911869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18091.

The product of its digits is 31104, while the sum is 41.

The square root of 142911869 is about 11954.5752329391. The cubic root of 142911869 is about 522.8247032815.

The spelling of 142911869 in words is "one hundred forty-two million, nine hundred eleven thousand, eight hundred sixty-nine".