142781018277 has 4 divisors (see below), whose sum is σ = 190374691040. Its totient is φ = 95187345516.

The previous prime is 142781018201. The next prime is 142781018297. The reversal of 142781018277 is 772810187241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 772810187241 = 3 ⋅257603395747.

It is a de Polignac number, because none of the positive numbers 2^k-142781018277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142781018297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23796836377 + ... + 23796836382.

It is an arithmetic number, because the mean of its divisors is an integer number (47593672760).

Almost surely, 2^142781018277 is an apocalyptic number.

It is an amenable number.

142781018277 is a deficient number, since it is larger than the sum of its proper divisors (47593672763).

142781018277 is an equidigital number, since it uses as much as digits as its factorization.

142781018277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47593672762.

The product of its (nonzero) digits is 351232, while the sum is 48.

The spelling of 142781018277 in words is "one hundred forty-two billion, seven hundred eighty-one million, eighteen thousand, two hundred seventy-seven".