142168587444 has 144 divisors (see below), whose sum is σ = 391869109632. Its totient is φ = 43197878016.

The previous prime is 142168587419. The next prime is 142168587493. The reversal of 142168587444 is 444785861241.

142168587444 is a `hidden beast` number, since 1 + 4 + 2 + 16 + 8 + 587 + 4 + 44 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17976139 + ... + 17984045.

Almost surely, 2^142168587444 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 142168587444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195934554816).

142168587444 is an abundant number, since it is smaller than the sum of its proper divisors (249700522188).

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

142168587444 is a wasteful number, since it uses less digits than its factorization.

142168587444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406 (or 8401 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 54.

The spelling of 142168587444 in words is "one hundred forty-two billion, one hundred sixty-eight million, five hundred eighty-seven thousand, four hundred forty-four".