142091384 has 16 divisors (see below), whose sum is σ = 269009520. Its totient is φ = 70355520.

The previous prime is 142091353. The next prime is 142091407. The reversal of 142091384 is 483190241.

It is a happy number.

It is a super-3 number, since 3×142091384³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 142091384.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85397 + ... + 87044.

It is an arithmetic number, because the mean of its divisors is an integer number (16813095).

Almost surely, 2^142091384 is an apocalyptic number.

It is an amenable number.

142091384 is a deficient number, since it is larger than the sum of its proper divisors (126918136).

142091384 is a wasteful number, since it uses less digits than its factorization.

142091384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172550 (or 172546 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 142091384 is about 11920.2090585694. The cubic root of 142091384 is about 521.8222360701.

The spelling of 142091384 in words is "one hundred forty-two million, ninety-one thousand, three hundred eighty-four".