142181023986 has 96 divisors (see below), whose sum is σ = 318648198960. Its totient is φ = 45784092672.

The previous prime is 142181023969. The next prime is 142181024003. The reversal of 142181023986 is 689320181241.

142181023986 is a `hidden beast` number, since 142 + 18 + 102 + 398 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (142181023969) and next prime (142181024003).

It can be written as a sum of positive squares in 8 ways, for example, as 72600608025 + 69580415961 = 269445^2 + 263781^2 .

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, 66037486 + ... + 66039638.

Almost surely, 2^142181023986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142181023986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159324099480).

142181023986 is an abundant number, since it is smaller than the sum of its proper divisors (176467174974).

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

142181023986 is a wasteful number, since it uses less digits than its factorization.

142181023986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 142181023986 in words is "one hundred forty-two billion, one hundred eighty-one million, twenty-three thousand, nine hundred eighty-six".