142271434777 has 4 divisors (see below), whose sum is σ = 142277279760. Its totient is φ = 142265589796.

The previous prime is 142271434757. The next prime is 142271434787. The reversal of 142271434777 is 777434172241.

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.

It is a cyclic number.

It is not a de Polignac number, because 142271434777 - 2¹¹ = 142271432729 is a prime.

It is a super-2 number, since 2×142271434777² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142271434777.

It is not an unprimeable number, because it can be changed into a prime (142271434727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885827 + ... + 2934712.

It is an arithmetic number, because the mean of its divisors is an integer number (35569319940).

Almost surely, 2^142271434777 is an apocalyptic number.

It is an amenable number.

142271434777 is a deficient number, since it is larger than the sum of its proper divisors (5844983).

142271434777 is an equidigital number, since it uses as much as digits as its factorization.

142271434777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844982.

The product of its digits is 1843968, while the sum is 49.

The spelling of 142271434777 in words is "one hundred forty-two billion, two hundred seventy-one million, four hundred thirty-four thousand, seven hundred seventy-seven".