142191789936 has 120 divisors (see below), whose sum is σ = 428181701760. Its totient is φ = 40542477696.

The previous prime is 142191789899. The next prime is 142191789973. The reversal of 142191789936 is 639987191241.

It is an interprime number because it is at equal distance from previous prime (142191789899) and next prime (142191789973).

It is a self number, because there is not a number n which added to its sum of digits gives 142191789936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1083355 + ... + 1207493.

It is an arithmetic number, because the mean of its divisors is an integer number (3568180848).

Almost surely, 2^142191789936 is an apocalyptic number.

142191789936 is a gapful number since it is divisible by the number (16) 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 142191789936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214090850880).

142191789936 is an abundant number, since it is smaller than the sum of its proper divisors (285989911824).

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

142191789936 is a wasteful number, since it uses less digits than its factorization.

142191789936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124651 (or 124638 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 60.

The spelling of 142191789936 in words is "one hundred forty-two billion, one hundred ninety-one million, seven hundred eighty-nine thousand, nine hundred thirty-six".