142009344 has 132 divisors (see below), whose sum is σ = 432162640. Its totient is φ = 44789760.

The previous prime is 142009339. The next prime is 142009369. The reversal of 142009344 is 443900241.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174699 + ... + 175509.

Almost surely, 2^142009344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142009344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216081320).

142009344 is an abundant number, since it is smaller than the sum of its proper divisors (290153296).

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

142009344 is a wasteful number, since it uses less digits than its factorization.

142009344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 142009344 is about 11916.7673468940. The cubic root of 142009344 is about 521.7217877134.

Adding to 142009344 its reverse (443900241), we get a palindrome (585909585).

The spelling of 142009344 in words is "one hundred forty-two million, nine thousand, three hundred forty-four".