142787442 has 32 divisors (see below), whose sum is σ = 327389184. Its totient is φ = 40669200.

The previous prime is 142787431. The next prime is 142787467. The reversal of 142787442 is 244787241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 142787442.

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 15 ways as a sum of consecutive naturals, for example, 8767 + ... + 19037.

It is an arithmetic number, because the mean of its divisors is an integer number (10230912).

Almost surely, 2^142787442 is an apocalyptic number.

142787442 is an abundant number, since it is smaller than the sum of its proper divisors (184601742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142787442 is a wasteful number, since it uses less digits than its factorization.

142787442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10614.

The product of its digits is 100352, while the sum is 39.

The square root of 142787442 is about 11949.3699415492. The cubic root of 142787442 is about 522.6729258290.

The spelling of 142787442 in words is "one hundred forty-two million, seven hundred eighty-seven thousand, four hundred forty-two".