142909384 has 16 divisors (see below), whose sum is σ = 268548300. Its totient is φ = 71296512.

The previous prime is 142909379. The next prime is 142909409. The reversal of 142909384 is 483909241.

It can be written as a sum of positive squares in 2 ways, for example, as 141086884 + 1822500 = 11878^2 + 1350^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15889 + ... + 23200.

Almost surely, 2^142909384 is an apocalyptic number.

It is an amenable number.

142909384 is a deficient number, since it is larger than the sum of its proper divisors (125638916).

142909384 is a wasteful number, since it uses less digits than its factorization.

142909384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39552 (or 39548 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 142909384 is about 11954.4712973849. The cubic root of 142909384 is about 522.8216729129.

The spelling of 142909384 in words is "one hundred forty-two million, nine hundred nine thousand, three hundred eighty-four".