142127163440 has 20 divisors (see below), whose sum is σ = 330445655184. Its totient is φ = 56850865344.

The previous prime is 142127163413. The next prime is 142127163461. The reversal of 142127163440 is 44361721241.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 142127163440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888294692 + ... + 888294851.

Almost surely, 2^142127163440 is an apocalyptic number.

142127163440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142127163440 is an abundant number, since it is smaller than the sum of its proper divisors (188318491744).

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

142127163440 is a wasteful number, since it uses less digits than its factorization.

142127163440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776589556 (or 1776589550 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 142127163440 its reverse (44361721241), we get a palindrome (186488884681).

The spelling of 142127163440 in words is "one hundred forty-two billion, one hundred twenty-seven million, one hundred sixty-three thousand, four hundred forty".