20127125771142 has 32 divisors (see below), whose sum is σ = 43357895306208. Its totient is φ = 6191938507776.

The previous prime is 20127125771131. The next prime is 20127125771143. The reversal of 20127125771142 is 24117752172102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20127125771094 and 20127125771103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20127125771143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20842923 + ... + 21787190.

It is an arithmetic number, because the mean of its divisors is an integer number (1354934228319).

Almost surely, 2^{20127125771142} is an apocalyptic number.

20127125771142 is an abundant number, since it is smaller than the sum of its proper divisors (23230769535066).

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

20127125771142 is a wasteful number, since it uses less digits than its factorization.

20127125771142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42636184.

The product of its (nonzero) digits is 109760, while the sum is 42.

The spelling of 20127125771142 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-five million, seven hundred seventy-one thousand, one hundred forty-two".