142109568 has 96 divisors (see below), whose sum is σ = 411325200. Its totient is φ = 47093760.

The previous prime is 142109557. The next prime is 142109603. The reversal of 142109568 is 865901241.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 323493 + ... + 323931.

Almost surely, 2^142109568 is an apocalyptic number.

142109568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142109568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205662600).

142109568 is an abundant number, since it is smaller than the sum of its proper divisors (269215632).

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

142109568 is a wasteful number, since it uses less digits than its factorization.

142109568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 142109568 is about 11920.9717724689. The cubic root of 142109568 is about 521.8444950102.

The spelling of 142109568 in words is "one hundred forty-two million, one hundred nine thousand, five hundred sixty-eight".